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Special Ed
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Mars Observations 2007-08
      #1893956 - 10/07/07 10:51 PM

Hi,

Sol Robbins mentioned starting a thread dedicated to comparing Mars observations, sketches, and even the occaisional image a la mode the recent Venus thread.

I'd like to start it off with this link to my third Mars observation of the 2007-08 apparition: Mars Sketch 7 Oct. 2007

I used HB and 6B graphite pencils, orange and yellow ochre, peach, and blue color pencils, and my trusty finger for blending.

I'd like to put the color half of the sketch with a black background, but haven't been able to figure out how to do that yet. It's probably in one of the tutorials if someone wants to point me in the right direction...

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
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rolandlinda3
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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #1894066 - 10/07/07 11:46 PM

Nice Michael. I have still not had the pleasure to going for it. That is a lot of sketch for a short period. Roland

--------------------
Roland
Blog: www.rolandlinda3.wordpress.com
Older sketches in Members Galleries (rolandlinda3)
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frank5817
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Re: Mars Observations 2007-08 new [Re: rolandlinda3]
      #1894237 - 10/08/07 02:22 AM

Michael,

Excellent sketch to begin the thread. A carefully made drawing.

Frank

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novbabies
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Re: Mars Observations 2007-08 new [Re: frank5817]
      #1894379 - 10/08/07 05:22 AM

Very realistic sketch. It will be nice to have a compendial capture cubbyhole!

--------------------
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Jeremy Perez
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Re: Mars Observations 2007-08 new [Re: novbabies]
      #1894787 - 10/08/07 10:58 AM

Another great sketch of Mars, Michael. You gave the blue NPH and limb haze a realistically delicate color. That dusky patch is interesting; do you think it's a transient feature? (I'm not able to call up a Mars albedo map at the moment.)

--------------------

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Kris.
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Re: Mars Observations 2007-08 new [Re: Jeremy Perez]
      #1894936 - 10/08/07 11:58 AM

great report & sketch Michael!

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Kris

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Kris.
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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1894990 - 10/08/07 12:17 PM

Quote:

I'd like to put the color half of the sketch with a black background, but haven't been able to figure out how to do that yet. It's probably in one of the tutorials if someone wants to point me in the right direction...





I zoom in on mars in HNSKY stellarium, copy and paste to microsoft picture (or photo?) editor. I then play with the colors to make a black background and white disk, which already has the right phase of disk and print!
or you could also use the templates Sol Robbins posts here from time to time

--------------------
Kris

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my website

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Acheron
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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1895151 - 10/08/07 01:23 PM

Here is my contribution.
Seeing was good which is rarity from my observation site. I used 12" F5 Dob at only 250x. I don't have barlow lens so this is my maximum. I also used filters W80A, W25 but most of the sketch was made while observing in white light.
Sketch was made on 07th Oct. 2007. at 23:25 UT
.

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Tommy5
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Re: Mars Observations 2007-08 new [Re: Acheron]
      #1895234 - 10/08/07 01:57 PM

Micheal and Acheron great sketches to start off this Mars season, it should be interesting to note the changes in the NPH and in the aldedo features as well as any dust storms that spring up while we are all sketching and observing.

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Special Ed
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Re: Mars Observations 2007-08 new [Re: novbabies]
      #1895309 - 10/08/07 02:25 PM

Thanks, folks. Roland, the time recorded on my sketch is when I placed the major details noted. I observed Mars for an hour and a half beforehand and another half hour afterwards. To complete the sketch probably took a half hour. Then I had to scan it, confirm features (I didn't preview), add the technical info, and write the notes. I did this off and on in between outdoor chores. After starting my observation at 5:30 AM, I finally posted the sketch in the SSO forum at 5:40 PM. This is relatively quick work for me.

Frank, I'm looking forward to your own carefully done Mars sketch. The versatility and competence you display in the wide range of objects that you render is truly impressive.

Mark, I agree and will just add a "c" to call it a compendial capture & comparison cubbyhole.

--------------------

Michael Rosolina
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1980 Orange Tube C8 f/10 SCT
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Special Ed
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Re: Mars Observations 2007-08 new [Re: Jeremy Perez]
      #1895371 - 10/08/07 02:53 PM

Quote:

That dusky patch is interesting; do you think it's a transient feature? (I'm not able to call up a Mars albedo map at the moment.)




Thanks, Jeremy. Assuming you are referring to the diagram sketch on the right, I think it is just the darker part of M Erythraeum following the CM. I noted it because often the disk is featureless in blue light except for the bright limb arc and scattered bright patches. Visible surface features might indicate a lack of clouds or atmospheric water vapor. With the red filter, the dark albedo wasn't as dark as expected, perhaps indicating the presence of airborne dust. I try to provide accurate observational data in hopes that the wise heads can interpret it and then inform and educate the rest of us.

Btw, thanks for your comments about my Sept. 30th sketch. I believe the drawings of the view with a blue filter that you mention were actually the ones done by Carlos in the last apparition. I just make a simple line drawing noting details so I don't clutter up my color drawing.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
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Sol Robbins
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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #1895434 - 10/08/07 03:23 PM

Great start to the upcoming Mars mania.

Thanks,

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kraterkid
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Re: Mars Observations 2007-08 new [Re: Sol Robbins]
      #1895622 - 10/08/07 04:23 PM

Michael this sketch and report is just superb! I really like the CCCC for MM idea. I've always appreciated the excellent detail in your narrative, sketch and notes, they are delightful to read. I'm not very Mars savvy in terms of named features, but listening to the likes of you, Sol, Carlos, Jeremy, and others has been bringing my Red Planet vocabulary along. Now if I could only learn to pronounce latin! Wonderful post and beautiful sketch!

Vedran, that is a great sketch!

--------------------
Rich



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frank5817
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Re: Mars Observations 2007-08 new [Re: kraterkid]
      #1896560 - 10/08/07 10:34 PM

Vedran,

Excellent color sketch of the red planet.

Frank

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Acheron
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Re: Mars Observations 2007-08 new [Re: frank5817]
      #1896781 - 10/08/07 11:46 PM

Thanks on comments!

I'll post new sketch whenever I can.

--------------------
I like sketching...

8" F6 Dob - "Betsy"
12" F5 Dob - "Tristac"


Messier Catalogue - done
Herschel 400 - 189 more to go
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Special Ed
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Re: Mars Observations 2007-08 new [Re: Acheron]
      #1897112 - 10/09/07 06:00 AM

Vedran,

That's an excellent sketch with great use of color. I believe you have captured Cimmerium Mare on the CM. The bright orangeish area south of it would be Eridania (partly obscured by the limb haze) and the bright area south and following it is Ausonia. [Edit: I believe the big bright area on the following limb is the edge of the Hellas Basin] The dusky area peeking out of the North Polar Hood is probably part of Utopia. Great job!

Rich, thanks for your very kind words--but don't tell me an accomplished lunar observer like yourself has trouble with Latin.

Sol--looking forward to your next one.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
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Mark I Eyeball
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Edited by Special Ed (10/09/07 09:36 PM)


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Special Ed
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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1898994 - 10/09/07 09:51 PM

Quote:

Quote:

I'd like to put the color half of the sketch with a black background, but haven't been able to figure out how to do that yet. It's probably in one of the tutorials if someone wants to point me in the right direction...





I zoom in on mars in HNSKY stellarium, copy and paste to microsoft picture (or photo?) editor. I then play with the colors to make a black background and white disk, which already has the right phase of disk and print!
or you could also use the templates Sol Robbins posts here from time to time




Thanks for the info, Kris. Do you sketch on copy paper? I do my sketches on 60 lb. Strathmore paper (400 series) so was thinking about adding the background during processing after scanning. I have Starry Nights so I guess I could also use your method and try to print the template with black background onto the Strathmore paper.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
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CarlosEH
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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #1899105 - 10/09/07 10:56 PM

Michael,

An excellent observation of Mars showing the Mare Erythraeum region. The North Polar Hood (NPH) is prominent. I look forward to your future observations.

Vedran- An excellent observation of the other side of Mars.

Carlos

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KevinP
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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #1899383 - 10/10/07 01:19 AM

Lovely sketch and observation Michael.

--------------------
Kev


Sketches


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Kris.
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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #1900641 - 10/10/07 03:00 PM

Quote:

Quote:

Quote:

I'd like to put the color half of the sketch with a black background, but haven't been able to figure out how to do that yet. It's probably in one of the tutorials if someone wants to point me in the right direction...





I zoom in on mars in HNSKY stellarium, copy and paste to microsoft picture (or photo?) editor. I then play with the colors to make a black background and white disk, which already has the right phase of disk and print!
or you could also use the templates Sol Robbins posts here from time to time




Thanks for the info, Kris. Do you sketch on copy paper? I do my sketches on 60 lb. Strathmore paper (400 series) so was thinking about adding the background during processing after scanning. I have Starry Nights so I guess I could also use your method and try to print the template with black background onto the Strathmore paper.




you're welcome michael, I use standard A4 printerpaper (copy paper i guess ) for all my sketches.

very nice sketch Vedran, i believe your colorwork is very good

--------------------
Kris

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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #1900750 - 10/10/07 03:40 PM

Michael & Vedran : great idea and excellent observations.

I might join in later this year when Mars rises earlier.

--------------------
Rony

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Special Ed
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Re: Mars Observations 2007-08 new [Re: rodelaet]
      #1901623 - 10/10/07 09:28 PM

Kevin--thanks and welcome to Cloudy Nights! Hope to hear more from you soon.

Rony, I'd like to see the result of your excellent skills turned towards Mars.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
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Sol Robbins
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Re: Mars 10/13/07 Observations 2007-08 new [Re: Special Ed]
      #1907152 - 10/13/07 08:54 AM Attachment (102 downloads)

Hi,

Sky finally cleared for this observation. I guess Mars is a bit bigger in apparent size as details looked good.

Hellas was very bright and appeared to have a bright preceding border against Mare Hadriaticum.

The NPH had a distinctly blue border. The folowing edge of Syrtis Major was more distinct than the preceding edge.

As in my previous observation, lighter boundaries between dark albedo features appear "stained" and of lower contrast. I remember these boundaries to be more defined in during the last apparition.

Drawing was made with a 2H pencil with lots of blending with my fingers.

Equipment details are imbedded in the sketch.

Best,

Attachment

--------------------
S.R.


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Kris.
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Re: Mars 10/13/07 Observations 2007-08 new [Re: Sol Robbins]
      #1907578 - 10/13/07 02:38 PM

i can't wait to see your sketches in december Sol!

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Kris

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kraterkid
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Re: Mars 10/13/07 Observations 2007-08 new [Re: Kris.]
      #1907712 - 10/13/07 04:00 PM

Sol, that is a terrific sketch! You manage to capture the most subtle details.

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Rich



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Tommy5
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Re: Mars 10/13/07 Observations 2007-08 new [Re: kraterkid]
      #1907779 - 10/13/07 04:37 PM

great Mars sketch, Hellas is still bright,do you think that there is still some dust in mars's atmosphere?,Again excellant sketch, have you tried to use color in your martian sketches?, others have used colors to great effect in their sketches and mars seems to benefit from a more colored approach, i think with your talent a color mars would be awesome, great sketch again.

Edited by Tommy5 (10/13/07 11:36 PM)


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frank5817
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Re: Mars 10/13/07 Observations 2007-08 new [Re: Tommy5]
      #1907905 - 10/13/07 05:30 PM

Sol,

Awesome drawing of Mars. The details you captured here are quite remarkable. It's one thing to see them and a totally different one to capture them. Excellent work.

Frank

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Re: Mars 10/13/07 Observations 2007-08 new [Re: frank5817]
      #1908282 - 10/13/07 09:55 PM Attachment (78 downloads)

Sol,

Another fantastic observation of Mars showing a significant amount of detail. The number of albedo features recorded is impressive. I have labeled the majority of features recorded. I look forward to your future observations.

Carlos

Attachment

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Sol Robbins
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Re: Mars 10/13/07 Observations 2007-08 new [Re: CarlosEH]
      #1908478 - 10/14/07 12:34 AM

Thanks to everyone.

T- One reason I don't draw in color is that I always use filters. So I never see planets in 'natural' color. As far as dust goes, this time I didn't see limb haze. SPH, NPH and Hellas appeared white. NPH southern edge appeared blue.

Carlos- I can't thank you enough for labeling many of the recent Mars sketches. It helps a lot. More often than not sketches and maps don't compare that well when trying to identify features.

Best,

--------------------
S.R.


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Kris.
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Mars 14/10/07 new [Re: Sol Robbins]
      #1908582 - 10/14/07 02:24 AM

Hi,

here's mars from this morning. I got up early at 6am, watched Mars, M42, Saturn (first time this season), a huge venus ( in comparison to mars ), mars again. and to finish it off, a very nice sunrise. a nice change to the foggy weather we've had here lately.

seeing was good, but not super. i should start to mount the reflector tube onto the tracking mount with mars getting bigger and revealing more now, pushing the dob is getting annoying.
there was a litlle limb haze visible (not quite as thick as on the sketch) especially present with the blue filter with which also the southern pole region (?) appeared bright with a very bright part which is shown upper right on the sketch.
the north polar hood had another shape too and i didn't see any blue color this time.
i searched for the two 'spikes' (real name? ) on the northern side of mare cimmerium (see sol's sketch) but couldn't detect it, i've never seen them actually



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Kris

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Acheron
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Re: Mars 14/10/07 new [Re: Kris.]
      #1908631 - 10/14/07 04:21 AM

Nice observations Kris and Sol.
Here is my contribution. Seeing wasn't great, 5/10 Pickering, so there are not many details visible. I was surprised how bright is Eridania. It was placed near limb and it was still enshrouded by the limb haze. I was thinking - No! It is not possible to see Hellas on the same place and same time one week later. Later, Mars Previewer showed that bright spot is Eridania and that I wan't not crazy.



--------------------
I like sketching...

8" F6 Dob - "Betsy"
12" F5 Dob - "Tristac"


Messier Catalogue - done
Herschel 400 - 189 more to go
http://www.facebook.com/pages/Vizualno-promatranje-Svemira/236702789691880?sk...


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Tommy5
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Re: Mars 14/10/07 new [Re: Acheron]
      #1909667 - 10/14/07 05:49 PM

Kris and Acheron, very nice sketches of Mars,i like t o see the other side of Mars as it is seen in Europe while we see a different side here in the u.s.,great sketches again.

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Acheron
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Re: Mars 14/10/07 new [Re: Tommy5]
      #1909719 - 10/14/07 06:18 PM

Thanks Tommy and I'm from Europe - Croatia.

--------------------
I like sketching...

8" F6 Dob - "Betsy"
12" F5 Dob - "Tristac"


Messier Catalogue - done
Herschel 400 - 189 more to go
http://www.facebook.com/pages/Vizualno-promatranje-Svemira/236702789691880?sk...


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frank5817
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Re: Mars 14/10/07 new [Re: Acheron]
      #1910061 - 10/14/07 08:50 PM

Kris and Vedran

Nice drawings of Mars. They both look great.

Frank

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Sol Robbins
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Re: Mars 14/10/07 new [Re: frank5817]
      #1910423 - 10/14/07 11:30 PM

Great sketches folks.

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kraterkid
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Re: Mars 14/10/07 new [Re: Sol Robbins]
      #1910479 - 10/14/07 11:52 PM

Lovin' these wonderful Mars sketches. Sol, Kris and Vedran, excellent additions to what promises to be a very exciting thread as we move toward opposition in December.

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Rich



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Re: Mars 14/10/07 new [Re: kraterkid]
      #1910723 - 10/15/07 04:32 AM

Michael, a very nice sketch of the Red Planet indeed!

--------------------


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Sol Robbins
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Mars Oct.. 21, 2007 with 3" Scope new [Re: Kris.]
      #1925461 - 10/21/07 05:50 AM Attachment (65 downloads)

Skies cleared and I took out the 3" TMB/BO Planet Hunter refractor to observe Mars. Image held up well at 216x.

NPH was prominent and showed as blue to white from south to north.

Limb brightening also apparent.

Major albedo features were Mare Cimmerium and Mare Sirenium.

Sketch was done with a 2H pencil and blending done with fingers.

I also had one bowl of my wife's incredible ginger carrot soup to prepare for observing.

Equipment detials are imbedded in the sketch.

Best,

Attachment

--------------------
S.R.


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Re: Mars Oct.. 21, 2007 with 3" Scope new [Re: Sol Robbins]
      #1925958 - 10/21/07 12:56 PM

Sol, it's an achievement to see any detail on mars now with a scope of that size! your sketch is very subtle rendered which is difficult to do, i sometimes look at a sketch I made and think: the dark areas or other details are darker on paper than I saw them in the scope, but it's the only way i can show it on the sketch i'm still struggling a bit with that. so very nice and realistic sketch

here are my impressions of the views i got saturday morning 2 hours apart. i didn't use the orange filter this time because it didn't improve the view, possably because the side of mars i observed in some ways lacks a dark regions which stand out better with the filter?
I used the tracking mount for my 8" tube first time for mars this year and i can only say i was stupid not too have used it before how relaxed it is to just sit and view at 400x or more instead of pushing the dob all the time!



and



i saw only a very little limb brightening and the north polar hood showed no bluish color to me this time.

best of luck in your own observing!

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Re: Mars Oct.. 21, 2007 with 3" Scope new [Re: Kris.]
      #1926016 - 10/21/07 01:21 PM

Sol and Kris,

Your Mars sketches continue to impress me. What I have seen of Mars this year has been disappointing so far. A little better seeing and I should be able to join in. Great observations by both of you.

Frank

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Re: Mars Oct.. 21, 2007 with 3" Scope new [Re: frank5817]
      #1926032 - 10/21/07 01:27 PM

Kris and Sol, gret sketches of Mars on the quiet side, can't wait for better seeing to get on the mars action.

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Re: Mars Oct.. 21, 2007 with 3" Scope new [Re: Kris.]
      #1926096 - 10/21/07 01:57 PM

Kris,

Great sketches and colors.

I have the same problem. I render features darker than they actually appear. I think its a combination of using a light for drawing in the dark and the drawing process itself.

I used an orange filter briefly. Like you, it did not improve albedo visibilty. It did show areas with clouds and dust better in the NPH and following limb. Maybe an orange filter will be more beneficial as Mars gets closer or with larger aperture. That said, the Variable Filter works better on Mars showing a variety of details in same view.

Best,

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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1927994 - 10/22/07 09:09 AM

Kris,

Your observations of Mars are excellent as well. I look forward to your future observations.

Carlos

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Re: Mars Observations 2007-08 new [Re: CarlosEH]
      #1952980 - 11/01/07 09:39 AM

it's silent around mars now with comet holmes' outburst!
i haven't seen it, in fact i completely forgot about it when i observed mars on te morning of 31 october. didn't even know where to look in the sky for it.

so here's my mars sketch, seeing was not so great this time. the south pole area was very bright, any idea what it might be?



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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1953311 - 11/01/07 12:26 PM

Kris,

Excellent Mars sketch. You are picking up much detail. I took a quick look early this morning, I'll need to see it just a bit better before I atempt a sketch.

Frank

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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1954048 - 11/01/07 05:58 PM

Beautiful sketch, Kris!

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Re: Mars Observations 2007-08 new [Re: rodelaet]
      #1954410 - 11/01/07 08:52 PM

Great sketch Kris. Intersting observation and details!

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Re: Mars Observations 2007-08 new [Re: Sol Robbins]
      #1987502 - 11/15/07 03:26 PM

yet another mars sketch showing syrtis major, i got a lot of looks of this side of mars so far, the nights seem to be more clear when this side is on...

the seeing was just mediocre, but enough to get a good overall view of mars which has grown a lot bigger since my last view. the NPH is bigger also, and the martian desserts look a lot darker/warmer in color than previous to me. almost copper-like.
the NPH was the brightest feature, followed with a bit of limb brightening and hellas, both with a blue filter.
the overall contrast on mars still looks a lot less than 2 years ago, and the dust storm is over if i'm not wrong?

i'm happy it's almost opposition time, i grow tired of getting up early and having trouble staying awake at work



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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1988107 - 11/15/07 08:58 PM

Kris,

Very nice Mars sketch. You really do beautiful work on all your planetary sketches. Please keep posting them during December when it is clear.

Frank

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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #1988172 - 11/15/07 09:35 PM

Ok...now that I actually have something to show, here is a sketch I made of Mars (my first Mars sketch) as it appeared to me while observing the red planet on 11-14-07:

Mars - Nov. 14, 2007

--------------------


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Re: Mars Observations 2007-08 new [Re: WadeVC]
      #1988735 - 11/16/07 06:20 AM

Kris,

Two excellent observations of the red planet showing a good amount of detail. The October 31st observation showing the Mare Erythraeum and Mare Acidalium regions and the November 15th one the Syrtis Major region. Thank you for sharing these with us all.

Wade- An excellent observation of Mars as well.

Carlos

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Re: Mars Observations 2007-08 new [Re: CarlosEH]
      #1993000 - 11/18/07 06:58 AM

I had another opportunity tonight to observe the red planet and make two sketches 2,5 hours apart. i tried to use a little more colors in the sketches, because i'm not really pleased anymore with the grey color for the dark markings, so there's a bit more brown in these sketches. talking about colors, why is it the polar hood has lost it's blueish hue from some time back it was very obvious in september to half october for me?

the first sketch is not very detailed, seeing was not superb and mars was only 36 above the horizon at the time.
i could only use up to 200x power.



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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1993010 - 11/18/07 07:22 AM

the second sketch looks a lot better, the air was much steadier, i could go up to 357x using a 7mm ortho 'barlowed' with a 2.5x powermate.
this has been the best view of mars i've got so far this year it's my 16'th sketch of mars this year, only two less than in 2005 and the best is yet to come
elysium was seen as a slightly brighter area bordered with a 'sharp' dark streak (phlegra?) to the east and a more diffuse darker smudge westwards.
the north polar hood appeared with a greyish border to me, and at the morning limb there was a (very) dark small triangle popping out of it. could that be nodus alcyonius? i looked that up with damian peaches' marsmap.
mare cimmerium & tyrrhenum were obvious, but i had difficulty seeing them divided, so i think hesperia is the lighter streak between them.
last i saw a bright area rotating on the disk at souther edge, what could that be? i don't think it could already be Hellas?



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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1994394 - 11/18/07 08:44 PM

Kris,

Excellent Mars sketches. These are very well drawn. Hope my skies clear soon.

Frank

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Re: Mars Observations 2007-08 new [Re: frank5817]
      #1995071 - 11/19/07 06:31 AM

Kris,

Two outstanding observations of Mars showing a good amount of detail. You have recorded the color of the disk and albedo features nicely. Thank you for sharing them with us all.

Carlos

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Re: Mars Observations 2007-08 new [Re: CarlosEH]
      #1997960 - 11/20/07 12:25 PM

thanks guys, bad weather for a week over here again i took my chance this weekend.
can anybody tell me what i could have seen at about 1 o' clock on my latest sketch? i thought i saw a bright region close to the edge, i don't think it can be hellas, could it be a cloud or something?
now that i'm typing this, i just checked some images on the CMO site(18 november, richard bosman) with mars at 220 cm (not too far from my estimated 217 cm), and it does look like hellas is just looking around the corner. i also do think that it was one of the last things I added to my sketch... so perhaps it is possible it's hellas after all

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Re: Mars Observations 2007-08 new [Re: Kris.]
      #1999131 - 11/20/07 09:24 PM

Excellant sketches Kris,mars is getting closer but so are the gales of november,and solid overcast of dec.,thanks for keeping us posted on the mars scene.

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Re: Mars Observations 2007-08 new [Re: Tommy5]
      #1999413 - 11/20/07 11:50 PM

Kris,

Your sketches keep getting better. Your eye for color is accurate.

I believe that Hellas is on the limb at the 2 o'clock position.

Thanks for posting your observations.

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Re: Mars Observations 2007-08 new [Re: Sol Robbins]
      #2000165 - 11/21/07 11:04 AM

Excellent observations and sketches, everyone!

Kris, superb sketches! I really am enjoying your color work. Do you do any blending? Is there a need to? I find my colored pencils very difficult to blend and just try to be careful with not showing too many actual pencil markings. I could use any tips you might have on it.

Sol, John Crilly's lent me a VP filter to use for now. Thanks for the tip!

--------------------
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Re: Mars Observations 2007-08 new [Re: Erix]
      #2000283 - 11/21/07 12:03 PM

Tommy, Sol, Erika: thanks i'm looking forward to see your future mars sketches posted here.

Erika, i have the same problem as you, color pencils are difficult for blending so i'm also carefull not to put too much pressure on them. i try to do a bit of blending using a cotton, like a make-up remover cotton. that helps me a bit, you could try it too if you haven't already.
i don't do any post-scan processing with my sketches using a program, other than just lowering the sharpness and make the image a little more or less bright.

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Re: Mars Observations 2007-08 new [Re: Erix]
      #2000610 - 11/21/07 03:02 PM

Erika,

I hope it works well for you.

BTW, the Variable Filter I use is not a polarizing one.

I wrote a review of the first version of it.

Here's a link:

http://www.cloudynights.com/item.php?item_id=917

Best,

--------------------
S.R.


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Re: Mars Observations 2007-08 new [Re: Kris.]
      #2000701 - 11/21/07 03:52 PM

Kris superb sketches, your color is just spot on!

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Rich



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Mars Observations 11.24.07 new [Re: kraterkid]
      #2005505 - 11/24/07 04:10 AM Attachment (85 downloads)

I had a chance to observe Mars. Seeing was variable ranging from good to great.

Sketch was done with a 2H pencil with blending done with my fingers.

Some details are imbedded in the sketch.

Attachment

--------------------
S.R.


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Re: Mars Observations 11.24.07 new [Re: Sol Robbins]
      #2005809 - 11/24/07 10:14 AM

excellent sketch Sol, i'm most impressed about the details you can capture in the blank desserts of mars, i've got difficulty enough with the dark regions
this has probably been asked before, but how long have you been observing & sketching planets?

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Re: Mars Observations 11.24.07 new [Re: Kris.]
      #2006078 - 11/24/07 12:02 PM

Thanks Kris,

Details in Martian desserts are more easily observed with the filter I use. I can't really see anything there in intergrated light as well as any Wratten color filter. This filter shows many different details at the same time and woks best when viewing Mars.

I think I've been sketching at the telescope for 3 or 4 years.

Thanks,

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Re: Mars Observations 11.24.07 new [Re: Sol Robbins]
      #2006124 - 11/24/07 12:26 PM

Sol,

This is a fantastic Mars sketch. The details are incredible.

Frank

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Re: Mars Observations 11.24.07 new [Re: frank5817]
      #2006783 - 11/24/07 06:11 PM

Thanks Frank.

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Re: Mars Observations 11.24.07 new [Re: Sol Robbins]
      #2006959 - 11/24/07 07:32 PM

Stunningly beautiful Sol, I can see why you made this one your avatar image! Truly a masterpiece of astronomical art.

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Rich



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Re: Mars Observations 11.24.07 new [Re: kraterkid]
      #2007011 - 11/24/07 08:00 PM

Thanks Rich,

I change avatars pretty often. One thing I do like about the avatar is the image scale. It gives a much better "impression" of an eyepiece-like view.

It occurs to me that there is a bit of a change taking place in my sketches. One change is in regard to the paper I am using which is very smooth. It is from Office Depot, Super White Platinum Series. That's in concert with using just a 2H pencil.

Seems like I can get a range of gray tones that are pretty close to each other. These tones are evident in that last couple of Mars sketches which shows my newer ability to render details in light and dark albdeo features with more subtlety. This paper accepts and holds on to graphite in a very controllable way.

It holds up well to rubbing when working up details which helps a lot in allowing a wider range of lifting or erasing graphite quickly. Blends smoothly too. Gray tones can be worked up faster.

I guess all of the above just adds up to being able to have a perceivable/scanable depth or richness when working on computer print out paper with a simple pencil. Blending stumps work very well on this paper too.

Its a 20 lb paper and acid free.

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Re: Mars Observations 11.24.07 new [Re: Sol Robbins]
      #2008698 - 11/25/07 05:18 PM

Sol, I'm always amazed with your splendid sketches. This one is sooo great!

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Re: Mars Observations 11.24.07 new [Re: rodelaet]
      #2009118 - 11/25/07 09:31 PM

great sketch Sol, and thanks for the sketching tips.

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Re: Mars Observations 11.24.07 new [Re: Tommy5]
      #2009512 - 11/26/07 01:00 AM

Rony & T5,

Thanks!

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Re: Mars Observations 11.24.07 new [Re: Sol Robbins]
      #2011261 - 11/26/07 09:58 PM

Hi Guys,

Between work demands, poor weather, and the Holmes Hubbub I've done no Mars observing except for online images and eyeballing the bright ruddy planet from time to time--it's gotten big and bright in the last few weeks!

Kris--you've made an excellent series of observations--keep up the good work.

Sol--your latest is a gem. Rendering the "fangs" of the Gomer Sinus is a tribute to your filter, optics, seeing, and most of all, your eye.

--------------------

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Re: Mars Observations 11.24.07 new [Re: Special Ed]
      #2012638 - 11/27/07 03:42 PM Attachment (79 downloads)

great sketches of Mars, everyone...great to see others getting good views of Mars too...

went out to observe/sketch Mars...it was a cold 24* and mostly calm...atmospheric, etc., conditions combined for a morning of P 7-8...which is about as good as it gets around here and, as such, is a cause for celebration...imho, it provided me with my 1st truly good views of Mars this apparition.

used 159x-318x...176x provided the sharpest view...but the best overall view for detail/albedo features was 227x...so, this is the view sketched.

thus, the Vixen ED103SWT handled this and all powers used/available this session...318x was still sharp and a bit dim but still confirmed all details seen at lower powers.

the NPH really stood out again...the light blue color has returned to the NPH...it appears to cover most of it again...again, confirmed in many photos i saw a few hrs. later...

to my eye, the NPH border appeared much thinner...but still appears a very dark greyish/black...

light brown subtle details were seen in the upper N. Hemisphere...as shown in the sketch...

the white spots in the sketch represent brighter surface areas...while Syrtis Major, Hellas, and several albedo features in the region were clearly visible/seen...as also shown in the sketch...

these observations were made using a Vixen flip-mirror diagonal and no filters...the image is oriented as i saw it in the ep...Paint software was used to make this sketch.



Jim

OBSERVING DATA

Mars
11/26/07 11:45 UT
Vixen ED103SWT
227x; 159x-318x
Seeing: P 7-8

PLANETARY DATA

C Mer. 273.13
< Dia. 14.67"
Phase .9598
Mag. -1.18

Attachment

--------------------
current scopes

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Re: Mars Observations 11.24.07 new [Re: Special Ed]
      #2012666 - 11/27/07 03:52 PM

Happy B-Day, Michael...hope your situation improves so that you can start presenting reports/sketches of Mars again real soon.

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
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Re: Mars Observations 11.24.07 new [Re: rusirius6278]
      #2013378 - 11/27/07 09:21 PM

Thanks Michael and happy birthday to you!

BTW, the Holmes hubbub was a very worthwhile diversion.

-------------

Jim,

Glad to see you're posting here. I can read the features through the details your sketch presents except what appears a the 2 o'clock position,(following side). Your representation show these as linear. I definitely wish I could get a belt buckle copy of your sketch,

Best,

--------------------
S.R.


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Re: Mars Observations 11.24.07 new [Re: Sol Robbins]
      #2013622 - 11/27/07 11:10 PM

Jim,

That is a really cool Mars sketch.

Frank

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Re: Mars Observations 11.24.07 new [Re: Sol Robbins]
      #2013942 - 11/28/07 04:00 AM

Quote:

Jim,

Glad to see you're posting here. I can read the features through the details your sketch presents except what appears a the 2 o'clock position,(following side). Your representation show these as linear. I definitely wish I could get a belt buckle copy of your sketch,

Best,




Quote:

Jim,

That is a really cool Mars sketch.

Frank




Thanks Sol and Frank!

Sol...glad that you, Carlos, etc., are also posting here...

yes...those linear markings kept coming and going...so far, i haven`t been able to identify them conclusively as any more than just subtle darker markings within features in that area on the surface of Mars...i believe MP2 also shows a marking or two in roughly around that same area...

working on the belt buckle thingy for you...

Thanks, again...

looking forward to your next reports/sketches...

Frank...i`ve seen numerous cool sketches throughout this entire thread...Thanks, again.

looking forward to your future sketches, etc...as well as everyone else`s here...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Rick Woods
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Re: Mars Observations 11.24.07 new [Re: rusirius6278]
      #2017508 - 11/29/07 05:14 PM

Jim,

How are you doing your sketch? Do you have a laptop fired up right there at the eyepiece? I'm trying to figure how it would work.

--------------------
- Rick
14" LX200
Cactus Patch Observatory

"The four points of the compass be logic, knowledge, wisdom, and the unknown. Some do bow in that final direction. Others advance upon it. To bow before the one is to lose sight of the three."


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rusirius6278
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Re: Mars Observations 11.24.07 new [Re: Rick Woods]
      #2018386 - 11/30/07 01:36 AM

Quote:

Jim,

How are you doing your sketch? Do you have a laptop fired up right there at the eyepiece? I'm trying to figure how it would work.




at the ep, i use a pencil to sketch everything exactly the way i see it...noting the color as i go along...then, i come in and copy the sketch using Paint software.

since it looks the same as the sketch at the ep...just in color...imho, it then becomes more presentable in these forums than the sketch at the ep.

Thanks for asking,

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Kris.
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Re: Mars Observations 11.24.07 new [Re: rusirius6278]
      #2021178 - 12/01/07 12:10 PM

very detailed sketch Jim, glad you got such a good view

--------------------
Kris

To be old & wise, you first gotta be young & stupid

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Re: Mars Observations 11.24.07 new [Re: Kris.]
      #2021952 - 12/01/07 07:23 PM

two weeks of bad weather have passed, and it's not going to get better soon i couldn't wait any longer to view mars again. clear periods mixed with rain showers tonight but i managed to get my scope (on dobson mount this time, didn't bother setting up the heavy mount) outside for just an hour alongside with the 66mm refractor for comparison

as expected the rainy weather and wind gusts made for terrible seeing. also the 8" dob had no cooldowntime.

i wasn't gonna put a sketch on paper at first but there were some differences between the scope which makes it worth a sketch and post i think.

i looked thru the small refractor first, first thing noticed at 133x was a beautifull and very white North polar cap/hood with a very dark line bordering the whole way. the color of the globe is much warmer than in the reflector.
in the reflector, at 250x, the view is much brighter, making it a bit more difficult to see stuff, but there's more to see than in the refractor. because of the brighter image the npc doesn't appear so drastic white as in the small scope and there's no such dark border, at least not as prominent.
niliacus lacus (the dark area north) had a 'hookshape' whereas in the refractor it's just a dark smudge. also mare erythraeum (dark area south) had a bit more shape on the 8". but overall seeing was so bad that i couldn't really note a lot more detail in the larger scope.

the colors don't come out very well, i tried to show the refractor gives a lot more colour than the reflector.



--------------------
Kris

To be old & wise, you first gotta be young & stupid

my website

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Special Ed
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Re: Mars Observations 11.24.07 new [Re: Kris.]
      #2022011 - 12/01/07 07:56 PM

Kris,

A great effort on your part--I know the sense of frustration when so much time goes by without clear weather--and frustration on top of frustration when the seeing is poor. Despite conditions, you were able to observe some detail on the Martian disk. By all reports, the North Polar Hood (NPH) is prominent right now but what you refer to as the South Polar Cap (SPC) is more likely clouds on the southern limb. I have read some speculative reports of observations of the South Polar Hood (SPH) beginning to form, but since it is very late summer in the Martian southern hemisphere (Ls 356) I don't think the polar cap is forming yet. Perhaps Carlos can confirm this.

Sol and Jim--thank you for the birthday wishes.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
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frank5817
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Re: Mars Observations 11.24.07 new [Re: Special Ed]
      #2022402 - 12/01/07 11:32 PM

Kris,

Now that is real determination and great results too.
Nicely done.

Frank

--------------------
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molniyabeer
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Re: Mars Observations 2007-08 new [Re: Kris.]
      #2022532 - 12/02/07 01:47 AM

Great sketches, all. I admire your ability to pick up the detail on the disk. I have not yet trained my eye well enough to see much more than an orangish ball, even accounting for seeing conditions.

Thanks for the previews. Clear skies.

--------------------
Steve
16" Meade LightBridge (Beowulf)
Lunt 60/50 Double Stack w/ Pressure Tuner
10" Hardin DSH, 8" ATM dob, StarMax 127mm Mak
Oberwerk 11 x 70 binocs
Four Winds Bar



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Kris.
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Re: Mars Observations 2007-08 new [Re: molniyabeer]
      #2024764 - 12/03/07 04:56 AM

Quote:

By all reports, the North Polar Hood (NPH) is prominent right now but what you refer to as the South Polar Cap (SPC) is more likely clouds on the southern limb.




thanks for pointing out my mistake Micheal i did of course mean the north polar cap/hood. i edited my post.

thanks frank & steve, you should grab every change you get to observe mars now, it's gonna grow just a little more untill mid december or so, but then it'll shrink again!

--------------------
Kris

To be old & wise, you first gotta be young & stupid

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Re: Mars Observations 2007-08 new [Re: Kris.]
      #2024776 - 12/03/07 05:12 AM

Kris,

A nice pair of observations of Mars. You have noted detail even though the seeing was poor. Thank you for sharing them with us all.

Carlos

--------------------


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Erix
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Re: Mars Observations 2007-08 new [Re: CarlosEH]
      #2025050 - 12/03/07 10:41 AM

Kris, that was an impressive observation and sketches, especially with the conditions. Well done!

Jim, welcome to the sketching forum and thanks for the great observation of Mars.

--------------------
Erika
Automatic doors make me feel like a Jedi.

Zhumell 16", 10" LX200 Classic,Celestron 102 XLT, ETX70-AT, DS Maxscope 60mm, AT6RC
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rusirius6278
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Re: Mars Observations 11.24.07 new [Re: Kris.]
      #2027225 - 12/04/07 10:25 AM

Quote:

very detailed sketch Jim, glad you got such a good view




Thanks Kris...your sketches of Mars in unfavorable conditions are quite good and make for an interesting comparison.

looking forward to your next observation reports/sketches...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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rusirius6278
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Re: Mars Observations 2007-08 new [Re: Erix]
      #2027241 - 12/04/07 10:31 AM

Quote:

Jim, welcome to the sketching forum and thanks for the great observation of Mars.




Thanks for the welcome, etc...very glad to find this forum...there`s many great observers posting here.

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Catapoman
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Re: Mars Observations 2007-08 new [Re: Special Ed]
      #2030269 - 12/05/07 02:17 PM Attachment (70 downloads)

I've had to wait for clear skies and for Mars to clear the trees in my backyard. Last night was the first night I was able to get a view early enough in the evening, but boy was it cold. I used no filters. BTW, this is my first ever sketch of Mars.

With the seeing not very good, I could only highlight some of the higher contrast areas. The NPC was obvious. There was also some light areas around the edge of the globe I'm learning may have been clouds. Just to the west near the NPC there was a dark region I believe was Mare Acidalum and Niliacus Lacus. They were proceeding off to the west. In the southern region I was able to note Mare Sirenum, Solis Lacus and Mare Erythraeum. A portion of Mare Sirenum appeared darker than the other areas during brief moments when seeing would settle down. Just north of the planet I observed a star about 4th (??) magnitude and noted it in the sketch.

Based on what I saw last night, I can't wait to get a good night of seeing.

Attachment

--------------------
A 12.5" Dob, a Mewlon, 2 EDs and a GM-8.




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Sol Robbins
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Re: Mars Observations 2007-08 new [Re: Catapoman]
      #2031567 - 12/05/07 10:52 PM

Excellent!!

--------------------
S.R.


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Kris.
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Re: Mars Observations 2007-08 new [Re: Sol Robbins]
      #2032051 - 12/06/07 06:44 AM

very good sketch! you already saw a lot of details and everything seems in place wait untill you've got good seeing what magnifications did you use?

PS: Sol, the sirius optics filter arrived today, unfortunately i'm not expecting good weather before next week

--------------------
Kris

To be old & wise, you first gotta be young & stupid

my website

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CarlosEH
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Re: Mars Observations 2007-08 new [Re: Kris.]
      #2032077 - 12/06/07 07:34 AM

Pernel,

An excellent observation of Mars. According to your date and time the central meridian (CM) was 86.7*W. This would place Solis Lacus on the CM (dark albedo feature towards the top) with Mare Erythraeum to the left of it and Mare Sirenum to the right. Mare Acidalium may be the dark albedo feature towards the bottom right but I wonder if the image was flipped horizontally? Thank you for sharing it with us all.

http://www.kk-system.co.jp/Alpo/MS2007/ms071205.htm

Carlos

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Catapoman
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Re: Mars Observations 2007-08 new [Re: CarlosEH]
      #2032203 - 12/06/07 09:04 AM

Thanks all for your comments.

Carlos, you are correct about the CM being around 90* and the placement of the the features. I used the Sky & Telescopes simulator to identify the features and guess I misinterpreted the dark feature as part of Mare Acidalum instead of Solis Lacus. I like the simulator in your link better and will be using it in the future.

The positioning of the features in my sketch were based on my sitting on the west side of the EQ mount facing east and using a diagonal. This flips the image if I had been facing the other direction. I basically sketched it just like I saw it and from the angle I was viewing from, which is the reason the NPR was tilted towards the lower right corner.

--------------------
A 12.5" Dob, a Mewlon, 2 EDs and a GM-8.




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rusirius6278
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Re: Mars Observations 2007-08 new [Re: CarlosEH]
      #2032204 - 12/06/07 09:05 AM

Pernel,

good observing report/sketch showing much detail...

as always, looking forward to your future reports/sketches in any seeing conditions...

btw, Congrats on the new scope...i`m trying to decide between a TSA-102, an SV115T-20, TMB115LW for planetary observing all yr. around...already decided on a 7" f/15 Mak for our summers...

could you Please PM me your impressions of your new TSA-102 triplet...especially in cold weather...and which Apo you`d recommend from the ones listed above and why...if anyone else wishes to PM me too or give impressions/recommendations in the thread, that`d be great also...TIA...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Catapoman
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Re: Mars Observations 2007-08 new [Re: Kris.]
      #2032206 - 12/06/07 09:06 AM

Quote:

what magnifications did you use?




Kris, I was viewing at 204x with 4mm BO/TMB planetary eyepiece.

--------------------
A 12.5" Dob, a Mewlon, 2 EDs and a GM-8.




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Rick Woods
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Re: Mars Observations 2007-08 new [Re: Catapoman]
      #2032428 - 12/06/07 11:11 AM

Quote:

Based on what I saw last night, I can't wait to get a good night of seeing.



That's it! You're hooked!
You may as well give up any hope of sanity right now - Mars has got you!

--------------------
- Rick
14" LX200
Cactus Patch Observatory

"The four points of the compass be logic, knowledge, wisdom, and the unknown. Some do bow in that final direction. Others advance upon it. To bow before the one is to lose sight of the three."


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Catapoman
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Re: Mars Observations 2007-08 new [Re: Rick Woods]
      #2032735 - 12/06/07 01:31 PM

Quote:

That's it! You're hooked!
You may as well give up any hope of sanity right now - Mars has got you!




Already lossing sanity as I'm thinking about going out tonight on one of the coldest nights this year so far, but the seeing conditions looks promising.

--------------------
A 12.5" Dob, a Mewlon, 2 EDs and a GM-8.




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Re: Mars Observations 2007-08 new [Re: Catapoman]
      #2032816 - 12/06/07 02:17 PM

you should! grab every change you can get!

--------------------
Kris

To be old & wise, you first gotta be young & stupid

my website

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rusirius6278
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Re: Mars Observations 2007-08 new [Re: Catapoman]
      #2032941 - 12/06/07 03:14 PM

Quote:

Quote:

That's it! You're hooked!
You may as well give up any hope of sanity right now - Mars has got you!




Already lossing sanity as I'm thinking about going out tonight on one of the coldest nights this year so far, but the seeing conditions looks promising.




same here, Pernel...except for the good seeing part... ...but i`m going out, anyway...the itch has become too strong after being clouded/snowed in for over a week...i`m going insane inside this blasted house...i got to get outside and get me some quality Mars, etc., time to keep what little sanity i have left... ...now, if only i could remember where i left that scarf...



Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Kris.
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Re: Mars Observations 2007-08 new [Re: rusirius6278]
      #2033043 - 12/06/07 03:54 PM

Quote:

Quote:

Quote:

That's it! You're hooked!
You may as well give up any hope of sanity right now - Mars has got you!




Already lossing sanity as I'm thinking about going out tonight on one of the coldest nights this year so far, but the seeing conditions looks promising.




same here, Pernel...except for the good seeing part... ...but i`m going out, anyway...the itch has become too strong after being clouded/snowed in for over a week...i`m going insane inside this blasted house...i got to get outside and get me some quality Mars, etc., time to keep what little sanity i have left... ...now, if only i could remember where i left that scarf...



Jim




i know how you feel, i've been clouded out for nearly 3 weeks

--------------------
Kris

To be old & wise, you first gotta be young & stupid

my website

my CN sketch & picture gallery


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Special Ed
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Re: Mars Observations 2007-08 new [Re: Kris.]
      #2034067 - 12/06/07 10:58 PM

Pernel,

Great Mars sketch. This is the place to post and learn--there are some outstanding Mars observers here.

Welcome to Mars Mania

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
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Sol Robbins
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Eye of Mars 12.07.07 new [Re: Special Ed]
      #2034359 - 12/07/07 02:49 AM Attachment (57 downloads)

I had very good seeing and cold temperatures. Albedo features during this were a bit confusing to me. After a while observing and after starting this sketch did it gradually became evident that the major feature here was Solis Lacus.

I used a 2H pencil and the paper I mentioned before. Again, this paper blends smoothly and takes graphite in a quick and controlled manner which imparts a depth that shows up when scanned.

Details are imbedded in sketch.

Best,

Attachment

--------------------
S.R.


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Special Ed
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Re: Eye of Mars 12.07.07 new [Re: Sol Robbins]
      #2034675 - 12/07/07 09:15 AM

Sol,

Great job on your sketch. The albedo features really appear to lack contrast this apparition. The North Polar Hood looks huge and that is an interesting bright area you saw on the p. limb--looks like the area of Chryse.

Thanks for braving the weather--cold temps add a whole new level of difficulty to sketching.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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Sol Robbins
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Re: Eye of Mars 12.07.07 new [Re: Special Ed]
      #2034683 - 12/07/07 09:23 AM

Michael,

The brightening at Chryse was one of the more interesting areas.

I guess what was so confusing about the Solis Lacus area seems to be an apparent softening of its boundaries and a change in its shape. Same goes for Phoenicus, Noctis and Tithonius.

I don't know if its a redistribution of dust and/or the more inclined angle or aspect of Mars during this apparition.

--------------------
S.R.


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Special Ed
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Re: Eye of Mars 12.07.07 new [Re: Sol Robbins]
      #2034692 - 12/07/07 09:30 AM

From what I can gather, it's probably a little of both.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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frank5817
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Re: Eye of Mars 12.07.07 new [Re: Special Ed]
      #2034873 - 12/07/07 10:57 AM

Pernel and Sol,

Thank you both for braving the cold and producing the wonderful sketches of Mars. I continue to wait out the clouds.

Frank

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Re: Eye of Mars 12.07.07 new [Re: frank5817]
      #2035301 - 12/07/07 02:35 PM

Oh my Sol! that's a beautifull view of the eye

--------------------
Kris

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Sol Robbins
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Re: Eye of Mars 12.07.07 new [Re: Kris.]
      #2035490 - 12/07/07 03:43 PM

Frank & Kris,

Thanks.

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Catapoman
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Re: Eye of Mars 12.07.07 new [Re: Sol Robbins]
      #2035524 - 12/07/07 04:03 PM

Michael and Frank, Thank you.

--------------------
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Catapoman
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Re: Eye of Mars 12.07.07 new [Re: Sol Robbins]
      #2035536 - 12/07/07 04:08 PM Attachment (53 downloads)

Nice job, Sol.

I was out last night too. Seeing was much better and it was evident at the eyepiece. Sessions in this kind of cold when not accustomed to it becomes pretty short, but rewarding.

Attachment

--------------------
A 12.5" Dob, a Mewlon, 2 EDs and a GM-8.




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Tommy5
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Re: Eye of Mars 12.07.07 new [Re: Catapoman]
      #2036028 - 12/07/07 08:21 PM

Pernel and Sol, great sketches of Mars,Solis Lacus is one of my favorite features on mars. Hopefully i will be able to catch it this weekend, the forecast isn"t favorable,so thanks for posting.

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Catapoman
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Re: Eye of Mars 12.07.07 new [Re: Tommy5]
      #2037084 - 12/08/07 10:51 AM

Thank you, Tommy5. Clouds are here now. Hopefully you'll get your chance to share with us.

--------------------
A 12.5" Dob, a Mewlon, 2 EDs and a GM-8.




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frank5817
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Re: Eye of Mars 12.07.07 new [Re: Catapoman]
      #2037507 - 12/08/07 03:12 PM

Pernel,

Yet another nice sketch of Mars. Thanks for posting.

Frank

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rusirius6278
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Re: Eye of Mars 12.07.07 new [Re: Catapoman]
      #2038721 - 12/09/07 06:38 AM

Quote:

Nice job, Sol.

I was out last night too. Seeing was much better and it was evident at the eyepiece. Sessions in this kind of cold when not accustomed to it becomes pretty short, but rewarding.




Sol,

another excellent sketch...

Pernel,

great sketch...the new scope seems to really be coming thru for you.

in answer to a question you asked which i somehow managed not to answer...is that...no, i didn`t get to go out that night...partly cloudy skies turned into all cloudy skies the entire night...and ever since...at 2 weeks straight now and counting since my last Mars observation...

just great...now a winter weather advisory is in effect until 12:00...

about to put the house up for sale...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



Edited by rusirius6278 (12/09/07 06:40 AM)


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Catapoman
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Re: Eye of Mars 12.07.07 new [Re: rusirius6278]
      #2038816 - 12/09/07 08:53 AM

Thanks again Frank and Jim.

These scanned sketches look much better on paper. I really need to get a good photo processor, so I can enhance scans to show how they actually look.

Jim, the Tak is performing nicely. It's still only 4" and first chance I get I'll be taking the Nexstar 11 out for some Mars viewing.

Look like I'll be going into to my cave for a week or so, due to it being here.

--------------------
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CarlosEH
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Re: Eye of Mars 12.07.07 new [Re: Catapoman]
      #2039544 - 12/09/07 03:49 PM Attachment (57 downloads)

I was finally able to make an observation of Mars on December 9, 2007 (06:25 and 06:50 U.T.). The hard side of Mars was visible and I was able to detect several albedo features as noted. I welcome any comments on my observation.

Date: December 9, 2007
Time (U.T.): 06:25 (left image) and 06:50 (right image)
CM: 094.2*W (left image) and 100.3*W (right image)
Ls: 360* (Northern Spring/Southern Autumn)
De: 4.4*N
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 359x
Filters (Wratten): None
Seeing: 6-7/10
Transparency (1-6): 3/10

Notes;
06:25 U.T. (IL, Left image): The South Polar Region (SPR) appears bright to brilliant (8-10) with projections noted over Mare Australe and into Thaumasia and Daedalia/Claritas. Solis Lacus appeared dark to dusky and elongated northeast-southwest (NE-SW). Nectar appeared dusky (4/10) connecting Solis Lacus to Mare Erythraeum (3-8/10). Aurorae Sinus (3/10) and Agathodaemon (Coprates) were visible as projections from Mare Eryhtraeum. Aonius Sinus (4/10) was partially obscured by a very bright (8/10) haze (cloud). Mare Sirenum appeared dark to dusky (3-4/10). Tharsis, Memnonia, Tempe, Arcadia, and Amazonis appeared bright (7/10). Mare Acidalium appeared dark to dusky (3-4/10). Mare Boreum was partially obscured by an extremely bright (9/10) North Polar Haze (NPH). Trivium Charontis (4/10)was visible towards the following limb .

06:50 U.T. (Right image, Wratten 38A): An extremely bright (9/10) South Polar Region (SPR, and Haze (SPH)) and North Polar Haze (NPH) were visible. A bright to extremely bright (7-10) cloud projecting from the preceding limb over Tharsis was noted. Very bright to extremely bright (8-9/10) Morning Limb Haze (MLH) ad Evening Limb Haze (ELH) were noted.

A digital image produced in Corel Painter X. The best of luck in your own observations of Mars.

Carlos

Attachment

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Catapoman
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Re: Eye of Mars 12.07.07 new [Re: CarlosEH]
      #2039725 - 12/09/07 05:18 PM

VERY nice Carlos. Keep 'em coming.

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Sol Robbins
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Re: Eye of Mars 12.07.07 new [Re: Catapoman]
      #2040264 - 12/09/07 09:18 PM

Carlos,

It was definitely worth the wait to see these observations.

Thanks,

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frank5817
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Re: Eye of Mars 12.07.07 new [Re: Sol Robbins]
      #2040432 - 12/09/07 10:59 PM

Carlos,

Wow! These are beautiful sketches of Mars. And thanks for filling in the geography too. Your seeing was not perfect and without filters you included a great amount of detail and true color. Fantastic.

Frank

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rusirius6278
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Re: Eye of Mars 12.07.07 new [Re: frank5817]
      #2040519 - 12/09/07 11:55 PM

Carlos,

outstanding observation report with great descriptions of all the detail, etc., you saw...and as shown in those beautiful sketches...i was waiting for this...and i`ll be looking forward to your next ones...



Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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CarlosEH
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Re: Eye of Mars 12.07.07 new [Re: rusirius6278]
      #2041956 - 12/10/07 05:32 PM

Thank you all for the wonderful compliments on my set of Mars observations. I was happy to have finally made my own observation of the red planet. I hope to make many more in the future. I look forward to everyone's observations as well.

Carlos

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Special Ed
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Re: Eye of Mars 12.07.07 new [Re: CarlosEH]
      #2042118 - 12/10/07 06:27 PM

Carlos,

It's very good to see one of your excellent renderings of your Mars observations. May you have many more nights of good weather--for your sake and ours!

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
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Tommy5
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Re: Eye of Mars 12.07.07 new [Re: Special Ed]
      #2042568 - 12/10/07 09:16 PM

great sketch of mars, the Eye of Mars looks very realistic.

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Erix
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Re: Eye of Mars 12.07.07 new [Re: Tommy5]
      #2042828 - 12/10/07 10:52 PM

Wonderful job, everyone that's contributed!

To help others observe and sketch this target, I would like to encourage everyone to give some tips, mini tutorials, etc to our current target thread.

Mars target thread for tutorials and tips

It's a great chance for us to learn from/help each other with the various techniques while Mars is at its best this time of the year.



--------------------
Erika
Automatic doors make me feel like a Jedi.

Zhumell 16", 10" LX200 Classic,Celestron 102 XLT, ETX70-AT, DS Maxscope 60mm, AT6RC
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JoeF
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Re: Eye of Mars 12.07.07 new [Re: Erix]
      #2044611 - 12/11/07 07:42 PM Attachment (65 downloads)

Some great pictures here everyone.
Heres my third effort of the season, I wanted to do two in quick succession to see if I would find any difference. First time I've tried colour too.
Hot off the press! I still have all my warm gear on and once I've walked the dog I'll be back out again. Will also have to get a map out and consult my Travellers Guide to Mars to see where I've been.

Joe

Attachment

--------------------
Orion Optics 200mm f6 & Accufocus on GP/E Mount
Opticron BGA 10x50 Binos
NELM 5.2 rural skies
Under tripod canine footwarmer





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JoeF
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Re: Eye of Mars 12.07.07 new [Re: JoeF]
      #2044785 - 12/11/07 09:25 PM Attachment (70 downloads)

Here is the 1st picture in the post above after playing about in the computer to give a slightly more realistic eyepiece view.

Joe

Attachment

--------------------
Orion Optics 200mm f6 & Accufocus on GP/E Mount
Opticron BGA 10x50 Binos
NELM 5.2 rural skies
Under tripod canine footwarmer





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Sol Robbins
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Re: Eye of Mars 12.07.07 new [Re: JoeF]
      #2044916 - 12/11/07 10:19 PM

Joe,

I like how you show the, for lack of a better word, raw sketches and the final work up.

It all adds up to a great eyepiece impression.

Thanks,

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Tommy5
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Re: Eye of Mars 12.07.07 new [Re: Sol Robbins]
      #2044928 - 12/11/07 10:25 PM

Excellant Mars sketches Joe, keep'em coming.

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Catapoman
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Re: Eye of Mars 12.07.07 new [Re: Tommy5]
      #2044943 - 12/11/07 10:33 PM

Great work, Joe! Your re-work shows realistic effects of viewing through the atmosphere.

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frank5817
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Re: Eye of Mars 12.07.07 new [Re: Catapoman]
      #2045043 - 12/11/07 11:23 PM

Joe,

Wonderful Mars sketching all 3 times.
Your computer sketch is very much the eyepiece view.

Frank

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Kris.
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Re: Eye of Mars 12.07.07 new [Re: frank5817]
      #2045484 - 12/12/07 07:56 AM

great sketches Carlos & Joe! i'm still waiting to get my first solis lacus view this year

joe, your colorwork is just what i am trying to get right for almost 6 months now! very realistic, I just can't seem to blend the dark markings in the desserts and *not* making it all look too contrasty. can you tell what program you use and how you do that?

--------------------
Kris

To be old & wise, you first gotta be young & stupid

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Kris.
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Mars 12-12-07 new [Re: Kris.]
      #2045525 - 12/12/07 08:28 AM

we enjoyed a beautifull cristal-clear night yesterday, with temperatures a few degrees below 0C, just the conditions i have been waiting for a long time and luckily seeing coperated as well to make perhaps the best viewing session for me this year

since my latest view mars is now as good as 100% illuminated and almost 16" big! i could push magnifications up to 416x using a 6mm UO Ortho EP + 2.5x powermate. it's also the first time i could try out the Sirius Optics Variable Filter System. i couldn't wait to see the effects on Mars, Sol Robbins is very enthousiastic about this filter because it offers an infinite amount of filter settings. it's a fun little thing, it gave me best views in the pink, green and ochre/brown area's (i didn't pay attention to the setting numbers, that's for next time).
but the rotating wheel isn't easy to use, i've got to lift it a bit up and than rotate it, there's also not much grip on the disk...

Syrtis major was the most promiment feature, but it was Sinus Sabaeus i was waiting for, so i've made 2 sketches roughly 1.5 hours apart.

most noticeable was the large and bright NPH with a bluish hue again. hellas was the next brightest feature, but not as bright as 2 years ago imo. the rough outlines of syrtis major, sinus sabaeus & mare serpentis were easy spotted. i could see some detail inside syrtis major, most surprising was a dark triangular shape at S.Major's tip, and some sort of spike pointing to Sinus Sabaeus. Sinus Sabaeus was darkest, followed by the north border of hellas and a dark streak in mare serpentis.

i'm really not happy with the color of the dark markings, i have used brown colors for it and also grey (as this sketch) but it doesn't look realistic enough to me, can anyone give me some pointers to what colors i could use?



--------------------
Kris

To be old & wise, you first gotta be young & stupid

my website

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Re: Mars 12-12-07 new [Re: Kris.]
      #2045530 - 12/12/07 08:34 AM

later the seeig was a bit less good, most of the finer detail wasn't visible anymore to me. i couldn't see the split in dawes bay (sinus meridiani) but i did see a 'gap' just before sinus meridiani.

i am surprised because the time in UT of my sketches don't match the ikemura simulations at all, it looks as if i'm about 2 hours wrong i have absolutely no idea how that's possible. so the CM i wrote down on the sketches is not so accurate



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Kris

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CarlosEH
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Re: Eye of Mars 12.07.07 new [Re: frank5817]
      #2045681 - 12/12/07 09:49 AM Attachment (78 downloads)

Thank you all for the compliments on my Mars observation. I was very happy to finally observe the red planet once more.

Joe- An excellent set of Mars observations. From the date and times given I estimate the central meridian to be approximately 320* West. I have labeled the major albedo features. I hope that this helps. Thank you for sharing these with us all.

Kris- Excellent observations of Mars showing the Syrtis Major region. You have captured a good amount of detail over the Martian disk. Thank you for sharing it with us all.

Carlos

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JoeF
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Re: Eye of Mars 12.07.07 new [Re: CarlosEH]
      #2045728 - 12/12/07 10:14 AM

Thank you Carlos.

I must admit I find identifying features I see on Mars extremey difficult. I avoid looking at any simulations before I observe as I suspect that they would influence my sketches (ah yes that must be Hellas so I'll make it brighter etc). That was another reason for doing the two sketches, too try to evaluate what I actually see and what I might just think I'm seeing.
Your help is much appreciated and now I shall spend some time looking to see how others have drawn and photographed these areas.



Joe

--------------------
Orion Optics 200mm f6 & Accufocus on GP/E Mount
Opticron BGA 10x50 Binos
NELM 5.2 rural skies
Under tripod canine footwarmer





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rusirius6278
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Re: Eye of Mars 12.07.07 new [Re: JoeF]
      #2046265 - 12/12/07 02:49 PM

good sketches in/around the Syrtis Major region, Joe and Kris...

Kris...the better seeing you had shows thru in the clarity of albedo features in your sketch...especially the 1st one...as you know, i had an excellent view of this region a couple weeks ago in the morning twi-light...way to go...keep up the good work.

Joe...good, realistic sketches...with several albedo features, etc., in the Syrtis Major, etc., regions seen/sketched...your ep sketch is so good that you captured the brightness/washing out effect quite well...which is being reported by many Mars observers using 8" and larger instruments...way to go...keep up the good work.

looking forward to your next sketches/observing reports...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Special Ed
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Re: Eye of Mars 12.07.07 new [Re: rusirius6278]
      #2046860 - 12/12/07 07:48 PM

JoeF,

Glad you're posting your sketches here--they are very good observations--as demonstrated by how Carlos was able to sort them out.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
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Special Ed
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Re: Mars 12-12-07 new [Re: Kris.]
      #2046907 - 12/12/07 08:06 PM

Kris,

Congratulations on making the most of a night of good seeing. Computer renderings utilize a skill all to itself so I don't mind if the dark areas have more contrast than seen at the ep, especially when noted as you did.
It just draws attention to the fact that these areas had more contrast or appeared darker than their surroundings. That kind of contrast enhancement happens sometimes with image processing.


Quote:

i couldn't see the split in dawes bay (sinus meridiani) but i did see a 'gap' just before sinus meridiani.





I could be wrong, but I believe that "gap" you refer to shows a hint of the southern edge of the crater Schiaperelli. The actual crater cannnot be resolved.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery

Edited by Special Ed (12/13/07 11:57 AM)


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frank5817
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Re: Eye of Mars 12.07.07 new [Re: Special Ed]
      #2046924 - 12/12/07 08:11 PM

Kris,

The sketches are excellent. Your colors look good.
I'm still waiting for a weather break.

Frank

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Sol Robbins
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Re: Eye of Mars 12.07.07 new [Re: frank5817]
      #2047037 - 12/12/07 09:03 PM

Great sketches Kris. The VFS takes a little bit of getting used to. I hope it lives up to your expectations and helps in seeing various albedo features.

BTW, if you used the Powermate withe the VFS in it plus your e.p., then the actual magnification you were using was at 500x in your first sketch. Reason is the VFS adds close to 1 inch of distance between the Powermate and the eyepiece. So, a 2.5x Barlow is now a 3X Barlow.

500x through an 8" reflector is really something!

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Re: Eye of Mars 12.07.07 new [Re: Sol Robbins]
      #2047212 - 12/12/07 10:18 PM

great sketches Kris,lots of detail,i'm also waiting for a weather break to get a crack at mars.

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Re: mars sketches 12/12/07 new [Re: Tommy5]
      #2047687 - 12/13/07 03:46 AM

thanks everyone for your nice comments!

Michael: i have no clue.. i saw the gap for a few brief moments when seeing was very well, but i could not detect the split. why do you think it shows something of the crater? i looked at some pictures of this region and most of them have this 'gap' see these pics from dec. 11

Sol: i believe the VFS makes it somewhat easier to see different sorts of details at the same time. whereas a normal glass filter like the #23a orange makes one specific type of detail much more noticeable (than the vfs) but rejects all the other details. with the vfs the nph stood out very well together with the dark areas, i believe that was in one of the pink settings.
but as you say i've got to get more used to it and learn which settings work best for me
yes i did put the vfs in the powermate, cool, if i was viewing at 500x i noticed the seeing was very good, but i don't think i've ever viewed mars at this power before and had a sharp disk.

it's too bad mars looks much more washed out to me than it did on the previous opposition.

if all goes well i'll be observing again this weekend, weather forecasts look promising, also for seeing

--------------------
Kris

To be old & wise, you first gotta be young & stupid

my website

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Special Ed
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Re: mars sketches 12/12/07 new [Re: Kris.]
      #2048354 - 12/13/07 12:19 PM

Quote:

Michael: i have no clue.. i saw the gap for a few brief moments when seeing was very well, but i could not detect the split. why do you think it shows something of the crater? i looked at some pictures of this region and most of them have this 'gap'




Quote:

i couldn't see the split in dawes bay (sinus meridiani) but i did see a 'gap' just before sinus meridiani.






Well, we may not be talking about the same "gap". I was referring to the semi-circle that appears cut out of the northern edge of Sabaeus Sinus near the following (right) limb in your drawing. This is part of the classical area known as Edom (see this map).

This is roughly the same location as Crater Schiaperelli--330- 340 longitude and 0- 5 S latitude. See this space image and this map.

The curved albedo features--the bare rock and dust--seem to hint at the presence of the crater to my eye.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
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Re: mars sketches 12/12/07 new [Re: Special Ed]
      #2048544 - 12/13/07 01:55 PM

i am referring to the same gap michael it does also show on many photos too, doesn't it?

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Kris

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Re: mars sketches 12/12/07 new [Re: Kris.]
      #2053119 - 12/15/07 04:51 PM

Sure. Look at this excellent image from Richard Bosman made close to the time of your observation (and close to your location ).

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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Re: mars sketches 16/12/07 new [Re: Special Ed]
      #2056341 - 12/17/07 05:44 AM

here's an observation from 16/12, seeing was quite good as i saw the same side of mars ...again.

i'm not happy anymore with the color sketches, way to difficult for me, my hat's off to people who get the colors right, i just can't seem to achieve it
so i'm back to grey tone sketching, i think this sketch was done using HB and F pencils.

it's not very well rendered but the north polar hood looks divided in two areas of different brightness, at the bottom it's very bright, and above it's less bright. utopia stood out well as a little triangle. hellas was not so bright as on the sketch tho.

i experimented a bit with various filters in combination with the variable filter system from Sirius Optics, and combined with a Baader contrast booster filter this provided me very nice views!

good luck in your own observations!



--------------------
Kris

To be old & wise, you first gotta be young & stupid

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CarlosEH
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Re: mars sketches 16/12/07 new [Re: Kris.]
      #2056362 - 12/17/07 06:34 AM

Kris,

An excellent observation of Mars. You have accurately depicted the Syrtis Major region of Mars. Syrtis Major is the prominent "dark bar" in the center (CM) with Mare Tyrrhenum/Syrtis Minor towards the left and Iapygia Viridis/Hellespontus/Sinus Sabaeus/Meridiani Sinus to the right. A bright cloud is visible over Hellas. Thank you for sharing it with us all.

Carlos

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Special Ed
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Re: mars sketches 16/12/07 new [Re: CarlosEH]
      #2057696 - 12/17/07 08:11 PM

Kris,

Nice sketch and faithfully rendered. You're getting quite good at drawing this side of Mars. The subtle variations in tone of the albedo features is well done.

The two-tone North Polar Hood that you reported is interesting. It *might* mean that you glimpsed the polar cap shining through the thinning Hood while further south, the duller Hood covered the dark albedo of Utopia.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
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rusirius6278
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Re: mars sketches 16/12/07 new [Re: Special Ed]
      #2059526 - 12/18/07 03:22 PM

nice sketch, Chris...your b/w sketches are every bit as good as the ones in color ...keep up the good work...looking forward to your next sketches/observing reports...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
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Re: mars sketches 16/12/07 new [Re: rusirius6278]
      #2059539 - 12/18/07 03:28 PM

Kris,

Great sketch. This black and white sketch is very nice, but keep at it with your color sketches I like them.

Frank

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Edited by frank5817 (12/19/07 01:21 AM)


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rodelaet
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Re: mars sketches 16/12/07 new [Re: Kris.]
      #2059581 - 12/18/07 03:48 PM

Kris,

Very cool!!

Can you recommend the variable filter? If so, where can I buy one?

--------------------
Rony

'The Casual Sky Observer's Guide.'

My Astronomical Sketches

My Binocular Sketches

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Re: mars sketches 16/12/07 new [Re: rodelaet]
      #2059744 - 12/18/07 05:21 PM Attachment (64 downloads)

I made a series of Mars observations while visiting a friend (Michael Palermiti of Jupiter, Florida). The observations were made on December 16, 2007 ((01:50-02:45 U.T.). I noted a good amount of detail over the regions between Syrtis Major and Mare Erythraeum. The first observation (left image) was made using an excellent Orion XT10 (10-inch (25-cm) F/4.8 Dobsonian refIector. The middle and right images were made using a 7-inch (18-cm) aperture stop over a 20-inch (52-cm) F/3.5 Newtonian reflector producing an unobstructed F/10 focal ratio (1,778 mm focal length). I welcome any comments on my observations.

Date (U.T.): December 16, 2007
Time (U.T.): 01:50 (left image), 02:15 (middle image), and 02:45 U.T. (right image)
CM: 334.3* (left image), 340.3* (middle image), and 349.7* (right image)
Ls: 003.0* (Early Northern Spring/Southern Autumn)
De: +3.3*, p 0.99, Dia.: 15.9"
Seeing (1-10): 5-6, Antoniadi (I-V): III
Transparency (1-6): 5-6

Notes:
01:50 U.T. (Left image, XT10 Dobsonian reflector, 136x)): Hellas is very bright to extremely bright (8-9/10) over the south-preceding limb. Hellespontus appears as a dark to dusky (3-4/10) diagonal bar across the central meridian (CM). Mare Australe appears dusky to shaded (4-6/10) and mottled. Noachis appears dusky to shaded (4-6/10) and mottled as well. Deucalionis Regio appears bright (7/10). Iapygia Viridis appears dull to bright (5-7/10) over the preceding limb adjacent to a very bright to extremely bright (8-9/10) evening limb haze (ELH). Deltoton Sinus appears dark to dusky (3-4/10) and mottled. Sinus Sabaeus appears dark to dusky (3-4/10) with an irregular northern border. Meridiani Sinus appears dark to shaded (3-6/10) towards the following limb (Edom appears bright (7/10) with possible haze noted over it). Syrtis Major appears dark to dusky (3-4/10) and mottled with an overlying bright to very bright (7-8/10) haze over it's eastern (preceding) half. Aeria, Arabia, Moab, Eden, Cydonia, and Dioscuria appear shaded to bright (6-7/10). Protonilus, Ismenius Lacus, and Deuteronilus appear dark to dusky towards the northern limb. Mare Acidalium (eastern portion) appears dark to dull (3-5/10) towards the north-following limb. Extremely bright (9/10) southern limb haze (SLH), morning limb haze (MLH), northern limb haze (NLH), and evening limb haze (ELH) is visible.

02:15 U.T. (Middle image, 7" F/10 Unobstructed reflector, 142x and 178x): The same descriptions as above with Syrtis Major closer to the preceding limb and Meridiani Sinus and Mare Acidalium more prominent towards the following limb.

02:45 U.T. (Right image, 7"F/10 Unobstructed reflector, 178x): The same description as above with a very prominent Sinus Sabaeus and Meridiani Sinus on the CM. Eastern portions of Margaritifer Sinus (4/10) and Mare Eryhtaraeum (4-6/10) are visible over the following limb.

The best of luck in your own observations of Mars. Graphite (4H to HB) then scanned and color added in Photoshop.

Regards,
Carlos

Attachment

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Acheron
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Re: mars sketches 16/12/07 new [Re: CarlosEH]
      #2059834 - 12/18/07 06:10 PM



Seeing was very good and Mars was beautiful.
I used 250x on 300/1500 GSO dob

--------------------
I like sketching...

8" F6 Dob - "Betsy"
12" F5 Dob - "Tristac"


Messier Catalogue - done
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Sol Robbins
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Re: mars sketches 16/12/07 new [Re: Acheron]
      #2059943 - 12/18/07 07:26 PM

Excellent sketches from everyone!

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Re: mars sketches 16/12/07 new [Re: Sol Robbins]
      #2060614 - 12/19/07 01:32 AM

Carlos and Vedran,

Excellent color sketches.

Carlos,

You always include much information on the Martian surface features, clouds and limb haze- Always makes for an enjoyable read. And those sketches are the best.
----
Vedran,

I was not expecting too much with this Mars close approach especially after the last 2 ,but with Mars so much higher in the sky as it crosses the meridian we are getting good views as your sketch clearly demonstrates. Very, very nice.

Frank

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Re: mars sketches 16/12/07 new [Re: frank5817]
      #2060678 - 12/19/07 02:41 AM Attachment (54 downloads)

I was anticipating a poor observing night. A layer of mid-level thin clouds along with some ice fog made the view of the moon poor in contrast. Both Mars and the moon took turns appearing and disappearing behind clouds. When I caught a look at Mars through the fog I realized the transparency, although poor, was improving the seeing in a good way. I was able to use a 4mm orthoscopic ocular for 360 power on Mars for sketching. I tried several filters but the fog was providing the only filter I needed.
The central meridian was 341 and the planet was nearly 100% illuminated. The angular size of Mars on this night was 15.9 of arc. Mars was shining through the clouds at magnitude -1.6. No stars below 3nd magnitude were visible. The most prominent features visible included: the bright North Polar Hood; and the following dark features: Syrtis Major about to rotate out of view; Iapygia Viridis; Mare Serpentis; Sinus Sabaeus; and Sinus Meridiani. This was my first Mars sketch in two years.

Sketching: White sketching paper 9x 9; 4H, B, HB, and 2H Graphite pencils; I used my fingers for blending. No adjustment after scanning was needed.
Date 12/19/2007 - 4:30-5:00 UT
Telescope: 10 inch f/5.7 Dobsonian and 4mm eyepiece 360x
Temperature: -3C (27F)
mostly cloudy, fog, calm
Seeing: Antoniadi II

Frank McCabe

Attachment

Edited by frank5817 (12/19/07 02:43 AM)


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rusirius6278
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Re: mars sketches 16/12/07 new [Re: frank5817]
      #2060822 - 12/19/07 06:18 AM

great sketches and observing reports, Carlos, Vedran, and Frank...good work...

keep em coming...as always, outstanding observing report, Carlos...hope it`s not another 2 yrs. before your next mars sketch, Frank...looking forward to your next reports/sketches...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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CarlosEH
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Re: mars sketches 16/12/07 new [Re: rusirius6278]
      #2060837 - 12/19/07 06:48 AM

Frank and Jim,

Thank you for your compliments on my latest set of Mars observations. I agree with you Jim that I hope that these observations represent the beginning of many more to come during the current apparition.

Frank- An excellent observation and report on your first observation of the apparition. I look forward to more of your excellent observations in the future.

Carlos

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Re: mars sketches 16/12/07 new [Re: CarlosEH]
      #2061409 - 12/19/07 01:21 PM

Thank you for compliments

--------------------
I like sketching...

8" F6 Dob - "Betsy"
12" F5 Dob - "Tristac"


Messier Catalogue - done
Herschel 400 - 189 more to go
http://www.facebook.com/pages/Vizualno-promatranje-Svemira/236702789691880?sk...


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Re: mars sketches 16/12/07 new [Re: Acheron]
      #2061464 - 12/19/07 01:56 PM

Carlos, Vedran & Frank: excellent Mars sketches
i hope you guys will post lots of them in the next few weeks/months.

vedran, interesting you saw elysium so bright in yellow, i'm facing this side of mars this evening. i'll keep an eye on that
btw: i love that copernicus sketch on your site, did you post it here too

--------------------
Kris

To be old & wise, you first gotta be young & stupid

my website

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Re: mars sketches 16/12/07 new [Re: Kris.]
      #2061710 - 12/19/07 04:11 PM

Carlos, Vedran and Frank : great sketches!!

--------------------
Rony

'The Casual Sky Observer's Guide.'

My Astronomical Sketches

My Binocular Sketches

Callibrate your Monitor with this little strip.



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Re: mars sketches 16/12/07 new [Re: rodelaet]
      #2062022 - 12/19/07 06:58 PM

Vedran,

Your observation of Mars is excellent. I am sorry that I failed to mention it sooner. Thank you for sharing it with us all.

Carlos

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DSalters
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Re: mars sketches 16/12/07 new [Re: CarlosEH]
      #2062251 - 12/19/07 08:39 PM Attachment (73 downloads)

Frank, I am glad you posted that sketch. Mine was done at nearly the same time (4:00 UT) and shows much of the same detail as yours. It is nice to see another sketch done for comparing details seen.

6" f/8 Dob
13mm Hyperion and 2.2x Ultima Barlow (200x)
#21 Orange and #82A Lt. Blue stacked
Seeing was poor overall and drifted in and out decency

I tried out seven color filters and the variable polarizer. No other filter on its own or in a stacked combo was more pleasing than the two listed above. The glare was subdued well and the colors on the planet were perfect. The surface was just the right orange with the darker features--a pleasing shade of...well...dark.

Has anyone else found this combination to be useful for their sketching?

BTW--This is my first sketch since August's 7" Mars

Attachment

--------------------
Daniel Salters

Astro-Tech 72ED
Bushnell Voyager 6" Dob
10" f/4.2 Springsonian

"The sun has one kind of splendor, the moon another and the stars another; and star differs from star in splendor." -1 Corinthians 15:41




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Re: mars sketches 16/12/07 new [Re: DSalters]
      #2062563 - 12/19/07 10:59 PM

Daniel,

Excellent sketch. Your filter combo worked very well. Now is the time for viewing Mars. Clear nights with good seeing are in order.
----------------------

Jim, Carlos, Kris, Rony and Daniel:

Thank you for your remarks.

Frank

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Acheron
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Re: mars sketches 16/12/07 new [Re: Kris.]
      #2063051 - 12/20/07 04:41 AM

Quote:

Carlos, Vedran & Frank: excellent Mars sketches
i hope you guys will post lots of them in the next few weeks/months.

vedran, interesting you saw elysium so bright in yellow, i'm facing this side of mars this evening. i'll keep an eye on that
btw: i love that copernicus sketch on your site, did you post it here too




Thanks Kris!
I've posted sketch of Copernicus almost 6 months ago. It was part of my series of 3 lunar sketches. Unfortunately, bad weather, college and job took my time away so I didn't had chance to sketch Moon again.

--------------------
I like sketching...

8" F6 Dob - "Betsy"
12" F5 Dob - "Tristac"


Messier Catalogue - done
Herschel 400 - 189 more to go
http://www.facebook.com/pages/Vizualno-promatranje-Svemira/236702789691880?sk...

Edited by Acheron (12/20/07 06:12 PM)


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Re: mars sketches 16/12/07 new [Re: Acheron]
      #2065619 - 12/21/07 10:43 AM

Daniel,

An excellent observation of Mars. You have recorded several albedo features over the Martian disk. Thank you for sharing it with us all.

Carlos

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Re: mars sketches 16/12/07 new [Re: CarlosEH]
      #2066092 - 12/21/07 03:02 PM

Hi, here's an example of what bad seeing does to Mars in the eyepiece, the planet was jumping up and down like crazy! when the image calmed down for a few seconds i could just about make out the lighter spot of Elysium with it's faint (it's faint to me anyway) 'borders'. but that's about all detail I could see...
Elysium appeared just brighter to me vedran, perhaps the yellow color you saw is more easily seen in a larger instrument with better seeing?



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Kris

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Re: mars sketches 16/12/07 new [Re: Kris.]
      #2066254 - 12/21/07 04:34 PM

Thanks for posting all these great Mars observations.

Kris;

Excellent coloration.

Thanks again and Happy Holidays!

--------------------
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Re: mars sketches 16/12/07 new [Re: Sol Robbins]
      #2066392 - 12/21/07 06:08 PM

Nice and realistic observation Kris.

Elysium was for a brief moment very bright pale yellow spot but it is hard to get right colors with wooden color pencils so it turned out just too yellow.

http://www.youtube.com/watch?v=mdeHYlfnd_g

--------------------
I like sketching...

8" F6 Dob - "Betsy"
12" F5 Dob - "Tristac"


Messier Catalogue - done
Herschel 400 - 189 more to go
http://www.facebook.com/pages/Vizualno-promatranje-Svemira/236702789691880?sk...


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Re: mars sketches 16-19/12/07 new [Re: Sol Robbins]
      #2066408 - 12/21/07 06:24 PM

Carlos, Vedran, Frank, Kris, and Daniel--

Excellent sketches from all of you that reflect your careful observations. Seeing detail like the brightness in Elysium is impressive. And with observers on both sides of the Atlantic Ocean, we're getting coverage of the Red Planet that would make the International Mars Patrol proud.

Daniel--I've gotten good views in past apparitions using a W21 and W80A stacked.

Carlos, as always, your work sets the standard. Your drawings combined with your notes give the student of Mars a rich resource to study.

Mars was a brilliant ruddy orb close to the western horizon just before sunrise the other morning as I left for work. Seeing it really gave me a sense of the approaching opposition.

I haven't had a telescope on Mars since October 7th. I'm not surprised at that--my school schedule is demanding, I can no longer stay up late and still function in front of my students the next day like I could when I was younger, and our weather is bad here this time of year. Still, it would be regretable but for the contributors here who keep one another informed of events on that distant, mysterious, and endlessly fascinating red planet.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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Re: mars sketches 16-19/12/07 new [Re: Special Ed]
      #2066715 - 12/21/07 09:07 PM

Kris,

Very nice color sketch under demanding conditions.

Frank

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rusirius6278
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Re: mars sketches 16-19/12/07 new [Re: frank5817]
      #2068289 - 12/22/07 04:29 PM

Kris,

yes...outstanding sketch of what mars can look like in bad seeing...you still made the most of it, tho...

let`s see...we`ve had great sketches of how mars looks in the ep complete with realistic blur/glare effects...and now what it looks like in bad seeing...looking forward to what ever comes next...excelent job, everyone...

i agree with Mike...i don`t know that mars has ever been covered so thoroughly at the same time from both sides of the Atlantic...at least in internet forums...let`s keep it going...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Re: mars sketches 16-19/12/07 new [Re: rusirius6278]
      #2068787 - 12/22/07 08:59 PM

Kris,

An excellent observation of Mars even under poor seeing conditions. When the seeing is erratic detail over Mars is difficult to pick out, but you managed to a good job. Thank you for sharing it with us all.

Carlos

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rusirius6278
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Re: mars sketches 16-19/12/07 new [Re: CarlosEH]
      #2071761 - 12/24/07 01:46 PM Attachment (70 downloads)

great to see others getting good views of mars...

went out to observe/sketch mars a couple mornings ago in A lll seeing...and 24* temps...

used 159x-318x in a 3 hr. session...the last 2 were spent at 227x and 267x which were providing the best overall views...but while using 227x, i noticed that this was the power at which a few moments of better seeing would come and go...during these all-to-brief moments, i easily got my best views of detail/albedo features...so, the image at 227x during such brief moments is the image sketched...this image thru the Vixen ED103SWT is very similar to the kind of detailed images i got of Jupiter during the summer...so 227x was used the entire last hr.

the image was oriented with mars very nearly on it`s side...with N to the left and S to the right...in the view of a refractor with flip-mirror diagonal...in the freezing cold, i tried to sketch it as close to horizontal as i could...and still get acceptable results by my standards...what you see is the end result...

i used the Cal live simulations to confirm that indeed...mars should have appeared on it`s side this morning...and this way in the morning now for a while, etc...and, according to them, with the Martian N Pole pointing toward earth...

apparently, the interaction between the orientation of mars as it appears to earth causes mars to swing downward during the night until it`s nearly on it`s side as seen from earth in the morning...and then starts to swing back up to where N is at or near the top by later that night...only to swing back down sideways again by the early morning...and so on...

as for the disk itself, there was considerable limb haze combined with bright white clouds all along the limb of the planet...this is shown in the sketch...as all white along the limb...this ultimately meant that no trace of the NPH, or what`s left of it, was seen...however, all other details/albedo features were seen as depicted in the sketch...white areas represent areas which tended to look brighter during moments of better seeing...the white may be hard to see with the bright/off-white surface color of the planet...but it was even tougher to pick them out at the ep...Chryse was a bit brighter as were areas in the Tharsis region...

as mars has gotten much brighter since the last time i saw it, i used different colors this time to continue adding as much realism to the viewed images as possible...the surface looked like a very bright off-white color with albedo features/details a somewhat faint greyish/black...only perhaps just a bit fainter than depicted in the sketch...

if i have time later, i`ll look up the Albedo features seen/sketched...of course, if anyone else wants to, that`d be great.

these observations were made using a Vixen flip-mirror diagonal to lessen brightness...no filters, etc., were used...the image is oriented close to how i saw it in the ep...Paint software was used to make this sketch.



Jim

OBSERVING DATA

Mars
12/22/07 10:45 UT
Vixen ED103SWT
227X, 267X; 159X-318X
Seeing: A lll

PLANETARY DATA

C Mer. 28.52
< Dia. 15.84"
Phase .9993
Mag. -1.63

Attachment

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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CarlosEH
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Re: mars sketches 16-19/12/07 new [Re: rusirius6278]
      #2072493 - 12/24/07 09:59 PM

Jim,

An excellent report and detailed sketch of Mars. You have captured the Mare Erythraeum region to the south and Mare Acidalium to the north very well. The bright spot over Mare Eryhtraeum is Argyre and the bright strip over Mare Acidalium is Achillis Pons. Thank you for sharing it with us all.

Merry Christmas and a Happy New Year!

Carlos

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rusirius6278
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Re: mars sketches 16-19/12/07 new [Re: CarlosEH]
      #2073139 - 12/25/07 11:02 AM

Quote:

Jim,

An excellent report and detailed sketch of Mars. You have captured the Mare Erythraeum region to the south and Mare Acidalium to the north very well. The bright spot over Mare Eryhtraeum is Argyre and the bright strip over Mare Acidalium is Achillis Pons. Thank you for sharing it with us all.

Merry Christmas and a Happy New Year!

Carlos




Thanks Carlos...and thanks for identifying many of the main features too.

Merry Christmas and Happy New Year to You and Everyone Else too!!!

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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CarlosEH
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Re: mars sketches 16-19/12/07 new [Re: rusirius6278]
      #2074244 - 12/25/07 11:57 PM Attachment (73 downloads)

I made an observation of Mars one half hour after that of the Moon and Mars pairing (December 24. 2007 at 04:00 U.T.) using my 9-inch (23-cm) F/13.5 Maksutov-Cassegrain. I used magnifications of 248x and 344x. The Longitude of the Sun (Ls) was 7 degrees (Early Northern Spring/Southern Autumn). The declination of the Earth (De) was 1.5 degrees North. The apparent diameter of Mars was 15.8 arc-seconds. The seeing was estimated as 6-7/10 (Antoniadi (II/V) and transparency 4/10. The central meridian (CM) was 287.0 degrees West which placed the wedge-shaped albedo feature Syrtis Major on it. When the seeing steadied I was able to note mottling within Syrtis Major. The South Polar Region (SPR) was obscured by a very bright to extremely bright (8-9/10) haze. Mare Tyrrhenum (5-6/10), Syrtis Minor (4/10), Ausonia (7/10), and Mare Hadriacum (4/10) were visible towards the south-preceding limb. Hellas appeared as a bright to very bright (7-8/10) oval preceding the CM. Iapygia Viridis appears dark to dusky (3-4/10) south of Syrtis Major. Hellespontus (3-4/10) was visible as a diagonal wedge east (following) Hellas. The preceding (western) half of Sinus Sabaeus (3-5/10) appears towards the following limb. Pandorae Fretum appears as a dusky (4/10) projection between Sinus Sabaeus and Hellespontus. Noachis (7/10) was the bright region south of Pandorae Fretum and Deucalionis Regio the bright (7/10) region north of it (and south of Sinus Sabaeus). The bright (7/10) deserts preceding Syrtis Major (on the CM) were Aetheria, Libya, Isidis Regio, and Neith Regio. Aeria and Arabia are the bright (7/10) deserts following Syrtis Major. Utopia, Boreosyrtis, Protonilus, Ismenius Lacus, and Deuteronilus were the dull to dark (3-5/10) albedo features towards the northern limb (from preceding to following limb). The North Polar Cap (NPC, 9-10/10) appears over the northern limb with the presence of very bright (8/0) haze. I welcome any comments on my observation.

Happy New Year and Mars observing.

Carlos

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frank5817
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Re: mars sketches 16-19/12/07 new [Re: CarlosEH]
      #2074437 - 12/26/07 03:41 AM

Jim, excellent report and sketch of Mars. In 3 hours you really captured a lot in your moments of good seeing.

Frank

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Re: mars sketches 16-19/12/07 new [Re: frank5817]
      #2074439 - 12/26/07 03:45 AM

Carlos,

I have admired your Mars sketches for many years. Fantastic work. I am really glad you post your Mars sketches here at CN.

Frank

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Sol Robbins
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Re: mars sketches 16-19/12/07 new [Re: frank5817]
      #2074556 - 12/26/07 06:54 AM

Great sketches.

On Christmas Eve I saw similar features that Carlos had rendered with my nephews. I did not have time to sketch as my nephews were more interested in trying to find Santa.

Best wishes to everyone for a happy, healthy and prosperous New Year!

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Re: mars sketches 16-19/12/07 new [Re: Sol Robbins]
      #2074701 - 12/26/07 10:12 AM

Carlos and Jim,

Interesting to see two such different approaches to sketching Mars both made from very careful and detailed observations--well done!

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
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rusirius6278
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Re: mars sketches 16-19/12/07 new [Re: Special Ed]
      #2074877 - 12/26/07 11:56 AM

Carlos,

another excellent/in-depth observing report and superb/beautiful sketch showing much detail...you captured the realistic view at the ep quite well...looking forward to many more...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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rusirius6278
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Re: mars sketches 16-19/12/07 new [Re: rusirius6278]
      #2074907 - 12/26/07 12:09 PM

Frank, Sol, Michael,

Thanks!

it actually did take the entire 3 hrs. to see/sketch that fine detail...by far, the most fine detail i`ve seen/sketched on this side of mars so far this apparition...it`s also the longest session out in the cold this apparition...



Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Re: mars sketches 16-19/12/07 new [Re: rusirius6278]
      #2076125 - 12/26/07 10:07 PM

Jim and Carlos, great sketches of Mars,Carlos very realistic mars view similar to the view i had Christmas night with Syrtis Major at the central meridian,thanks for sharing.

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Re: mars sketches 16-19/12/07 new [Re: Tommy5]
      #2076706 - 12/27/07 09:00 AM

Thank you all for the wonderful compliments on my latest observation of Mars and observing skills. I was very happy to be observing Mars again. The best of luck in your own observations of Mars.

Happy New Year!

Carlos

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rusirius6278
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Re: mars sketches 16-19/12/07 new [Re: Tommy5]
      #2076735 - 12/27/07 09:23 AM

Thanks also, T5...looking forward to your next sketch/report...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Re: mars sketches 16-19/12/07 new [Re: rusirius6278]
      #2078664 - 12/28/07 02:04 AM Attachment (70 downloads)

I made a pair of observations on December 28, 2007 using my 9-inch (23-cm) F/13.5 Maksutov-Cassegrain. I noted a significant amount of detail over the Mare Cimmerium and Elysium regions of Mars. I welcome any comments on my observations.

Date (U.T.): December 28, 2007
Time (U.T.): 01:20 (left image, IL) and 01:50 (right image, Wratten 38A)
CM: 227.5*W (left image) and 234.9*W (right image)
Ls: 009.0* (Early Northern Spring/Southern Autumn)
De: 0.7* North, p 1.00, Dia. 15.7"
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 163x, 273x, and 359x
Seeing (1-10): 6-7, Antoniadi (I-V): II
Transparency (1-6): 5

Notes:
01:20 U.T. (Left image, CM 227.5*W, IL): The South Polar Region (SPR) appears obscured by a very bright to extremely bright (8-9/10). Mare Australe appears dusky to shaded (4-6/10) north of the haze. Electris, Eridania, and Ausonia appear to be obscured by a bright to very bright (7-8/10) haze. Mare Cimmerium appears dark to dusky (3-4/10) and mottled. The northern border of Mare Cimmerium contains projections (Laestrygonum Sinus, Cyclopum Sinus, and Cerberi Sinus, preceding to following). "Valhalla" was visible north of Mare Cimmerium as a dusky (4/10) band. Hesperia appears as a bright (7/10) diagonal strip between Mare Cimmerium and Mare Tyrrhenum. Mare Tyrrhenum appears dark to shaded (partially obscured by a very bright (8/10) morning limb haze (MLH). Zephyria, Aeolis, Aethiopis, and Aetheria appears bright (7/10). Amazonis and Arcadia appear dusky to shaded (4-6/10) and mottled. A very bright (8/10) orographic cloud is visible over Olympus Mons over the north-preceding (evening) limb. Trivium Charontis, Phlegra, and Azania appear dark to dull (3-5/10). The Propontis Complex (Propontis I and II, Castorius Lacus, and Euxinus Lacus) appears dark to dusky (3-4/10). Elysium appears bright with a very bright (8/10) cloud over it's north-preceding sector. Panchaia appears bright (7/10) and Lemuria (dusky (4/10). The Hyblaeus Extension appears dark to dull (3-5/10) following Elysium. Syrtis Major appears to be obscured the very bright (8/10) MLH. The North Polar Cap (NPC) appears brilliant (10/10) along the northern limb.

01:50 U.T. (Right image, CM 234.9*W, Wratten 38A (Blue) filter): Mare Cimmerium appears dusky (4/10). The southern limb, preceding (evening) limb, northern limb, and following (morning) limb appear very bright (8/10). A very bright (8/10) orographic cloud appear over Olympus Mons over the preceding limb. A very bright (8/10) cloud appears over Elysium.

The best of luck in your own observations of Mars. A digital image produced in Corel Painter X.

Regards,
Carlos

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Sol Robbins
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Re: mars sketches 16-19/12/07 new [Re: CarlosEH]
      #2078841 - 12/28/07 06:46 AM

Fabulous sketches Carlos!

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S.R.


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novbabies
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Re: mars sketches 16-19/12/07 new [Re: Sol Robbins]
      #2078849 - 12/28/07 06:59 AM

Carlos, way beyond fabulous !!!

--------------------
Good Seeing!

Mark

Orion 12" XTi f/4.9


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ngc2289
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Re: mars sketches 16-19/12/07 new [Re: CarlosEH]
      #2078883 - 12/28/07 07:33 AM

Darn!! Those are good sketchs!!! Some of the best sketchs I have seen!!!!!!

--------------------
Mike Traub(Mr. Congeniality): I've learned that I don't suffer from insanity, I enjoy it!:Shipfitters mottos; Cut to suit, pound to fit, paint to hide!: If it dosen't fit get a bigger hammer!......Retired and BROKE!!!!!!!!:SV 80DL Triplet:6" f/6 Home built newt.:PST: UniversalAstronomics UniStar Deluxe.


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Re: mars sketches 16-19/12/07 new [Re: ngc2289]
      #2079288 - 12/28/07 12:18 PM

Carlos,

A pair of beyond beautiful sketches. I sat with a map as I read the tour guide you added. Great post.

Frank

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Tommy5
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Re: mars sketches 16-19/12/07 new [Re: frank5817]
      #2079463 - 12/28/07 01:59 PM

great sketch, you seem to be seeing a lot of stuff in the northern hemisphere which was a bit blank in the 03 opposition,perhaps this is due to the different tilt Mars is giving us,i really like your computer sketches they are very realistic as to the texture of mars as seen in the eyepiece.

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rusirius6278
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Re: mars sketches 16-19/12/07 new [Re: Tommy5]
      #2079778 - 12/28/07 05:07 PM

Carlos,

at it again i see

a couple more outstanding sketches...somehow, your sketches are good enough that they make the, 'quiet side', of Mars look not so quiet...lots of detail in your sketches...and that blur for realism is the icing on the cake...superb, detailed report, too...looking forward to more...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Re: mars sketches 16-19/12/07 new [Re: rusirius6278]
      #2080613 - 12/29/07 01:31 AM

I truly appreciate all of the wonderful compliments on my latest observations of Mars. I was impressed by the amount of detail visible over this longitude of the red planet. I am always trying to improve my rendering techniques. The best of luck in your own observations of Mars.

Carlos

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Sol Robbins
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Mars 12.30.07 new [Re: CarlosEH]
      #2082729 - 12/30/07 05:11 AM Attachment (74 downloads)

Hi.

I had great seeing conditions tonight for Mars observing. Probably my best view yet for this apparition.

I used a bunch of pencils and a very light touch. I think I used 4H, 2H and 2B pencils. Blending was done with fingers. My eraser shield really got a workout on this one.

Other details are written in the sketch.

Best,

Attachment

--------------------
S.R.


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novbabies
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Re: Mars 12.30.07 new [Re: Sol Robbins]
      #2082765 - 12/30/07 05:58 AM

Sol, !

--------------------
Good Seeing!

Mark

Orion 12" XTi f/4.9


VERY old Edmund 6" f/8 reflector
Assorted binoculars


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rusirius6278
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Re: Mars 12.30.07 new [Re: novbabies]
      #2082916 - 12/30/07 09:25 AM

great to see a sketch from you again, Sol...another outstanding sketch with lots of fine detail...

hope you give the 3" refractor another work-out to see what you/it can do on Mars just after opp...

looking forward to your next sketches...regardless of scope used...

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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frank5817
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Re: Mars 12.30.07 new [Re: rusirius6278]
      #2083309 - 12/30/07 01:05 PM

Sol,

Incredible, extraordinary, amazing.

Frank

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Sol Robbins
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Re: Mars 12.30.07 new [Re: frank5817]
      #2083539 - 12/30/07 02:50 PM

Many thanks!

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Re: Mars 12.30.07 new [Re: frank5817]
      #2084956 - 12/31/07 05:28 AM Attachment (71 downloads)

Sol,

A fantastic and highly detailed observation of Mars. You have recorded minute detail within the major albedo features. I have labeled the majority of features (although not all) visible. I look forward to your future observations.

Carlos

Attachment

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novbabies
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Re: Mars 12.30.07 new [Re: CarlosEH]
      #2085006 - 12/31/07 06:16 AM

Carlos, , thanks for this remarkable service !

--------------------
Good Seeing!

Mark

Orion 12" XTi f/4.9


VERY old Edmund 6" f/8 reflector
Assorted binoculars


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Sol Robbins
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Re: Mars 12.30.07 new [Re: novbabies]
      #2085129 - 12/31/07 09:13 AM

Quote:

Carlos, , thanks for this remarkable service !




Thanks Carlos.

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Kris.
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Mars 02/01/08 new [Re: Sol Robbins]
      #2092468 - 01/03/08 11:57 AM

i had fair seeing last night for my first view of Solis Lacus this year! the whole area changed a lot since last opposition and looks bigger than compared, probably because mars's equator region is now tilted to us?

most striking was the limb brightening almost all around the disk, preceding and following limb. then there seems to be a dark line dividing the north polar cap from the hood, because the polar hood region wasn't as brilliant as the region below the 'line'. it was the most contrasty detail on the disk.
the polar hood itself looked to have a (cloud?)extension to the south.

i tried another set of color pencils and it looks better than all my previous sketches imo.

the sirius optics variable filter is really useful and fun to use on mars, especially the pink settings around 200 provided good views tonight.



--------------------
Kris

To be old & wise, you first gotta be young & stupid

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Re: Mars 02/01/08 new [Re: Kris.]
      #2092682 - 01/03/08 01:25 PM

Kris,

WOW! This is a beautiful sketch. Your color selection is excellent. Keep up the great work.

Frank

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rusirius6278
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Re: Mars 02/01/08 new [Re: frank5817]
      #2092732 - 01/03/08 01:42 PM

nice sketch, kris...glad you got your 1st good look at Solis Lacus...i imagine that filter is quite good and helps as you indicate...keep up the good work.

Jim

--------------------
current scopes

Vixen ED103SWT
Vixen ED102S
C-102AZ/HD
StarMax 127
Jason 60/11.7

UO HD Abbe Orthos - 5mm, 6mm, 7mm, 9mm
Older UO Ortho - 4mm
Celestron 2x Ultima Barlow

and many other scopes i`ve been fortunate enough to check out...



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Sol Robbins
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Re: Mars 02/01/08 new [Re: rusirius6278]
      #2092784 - 01/03/08 01:59 PM

Great sketch Kris!

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Re: Mars 02/01/08 new [Re: Kris.]
      #2093064 - 01/03/08 03:27 PM

Excellent work, Kris!!

--------------------
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Re: Mars 02/01/08 new [Re: Kris.]
      #2093550 - 01/03/08 06:07 PM

Ooooo... Very nice!!!!!!!!!!!!!

--------------------
Mike Traub(Mr. Congeniality): I've learned that I don't suffer from insanity, I enjoy it!:Shipfitters mottos; Cut to suit, pound to fit, paint to hide!: If it dosen't fit get a bigger hammer!......Retired and BROKE!!!!!!!!:SV 80DL Triplet:6" f/6 Home built newt.:PST: UniversalAstronomics UniStar Deluxe.


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Re: Mars 04/01/08 new [Re: ngc2289]
      #2097236 - 01/04/08 11:23 PM Attachment (70 downloads)

Hi all,

My compliments to Kris, Sol, and Carlos for your accurate, detailed, and beautifully done sketches of the Red Planet. Your skills and perserverance are an inspiration to us all.

Because of family obligations and poor weather, I have been unable to observe or even participate in this forum for quite some time.

I was fortunate to have an opportunity to observe Mars last night under above average seeing conditions. Conditions on the ground were less than ideal, with temperatures around 12F/-11C so I decided not to do a color pencil sketch. I was out in the cold for almost five hours, so I had to use all my arctic gear to stay comfortable.

Materials used were HB and 2B pencils, an eraser shield, a kneadable eraser and Strathmore 400 series 60# recycled paper. I used my finger to blend. The sketch was digitally flipped right to left from my SCT mirror-reversed original so I could submit it to the OAA/CMO website.

It was great to finally get another look at Mars--my last observation was Oct. 7th when the Red Planet was at an apparent diameter of ~10 arcseconds.

Attachment

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery

Edited by Special Ed (01/06/08 03:08 PM)


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Tommy5
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Re: Mars 02/01/08 new [Re: Special Ed]
      #2097318 - 01/04/08 11:57 PM

Kris and micheal, great mars sketches,i have only had one chance to view mars in a month so thanks for sharing with us, nice to see you back sketching micheal,and yes mars is giving us a peek at its northern side.

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Re: Mars 02/01/08 new [Re: Tommy5]
      #2097588 - 01/05/08 02:28 AM

Michael,

Great sketch and report. The planet is still close enough for a good look if the seeing cooperates. This period of the last 3 weeks has been the poorest I can ever remember for December-January at my home in Northern Illinois. I anticipated some Mars observation and have been clouded out nearly every evening, night and morning. I hope I get an opportunity to observe soonbut if not there are always great sketches here like yours.

Frank

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Re: Mars 02/01/08 new [Re: frank5817]
      #2097940 - 01/05/08 09:39 AM

Tommy, Frank, thanks! I know from news reports that you folks have been getting plenty of unfavorable weather--hope you get a break soon. The poor weather here is not unusual--we average two cloudy days out of every three.

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Re: Mars 02/01/08 new [Re: Special Ed]
      #2098496 - 01/05/08 01:16 PM

Great sketch Michael

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Re: Mars 02/01/08 new [Re: Sol Robbins]
      #2100552 - 01/06/08 10:31 AM

Kris and Michael,

Excellent observations of Mars. Kris captured much detail over the Solis Lacus and Mare Sirenum regions. Michael recorded Mare Cimmerium/Mare Tyrrhenum with Syrtis Major over the following limb. Thank you for sharing them with us all.

Carlos

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Re: Mars 02/01/08 new [Re: CarlosEH]
      #2100888 - 01/06/08 01:34 PM

Sol and Carlos, thank you. I also want to add that I thought Kris captured the yellowish appearance of Mars very well in his color sketch. That is how Mars appeared to me the other night when I wasn't using filters.

Also, I finally figured out how to digitally add a black background to my sketch--I like the contrast better. Comments are welcome.

Edited by Special Ed (01/06/08 03:12 PM)


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Re: Mars 02/01/08 new [Re: CarlosEH]
      #2101262 - 01/06/08 04:15 PM

Michael,

Wonderful sketch!!

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Re: Mars 02/01/08 new [Re: rodelaet]
      #2101619 - 01/06/08 06:55 PM

Sol, incredible, inspiring.

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Re: Mars 02/01/08 new [Re: Mike Clemens]
      #2102040 - 01/06/08 10:03 PM

Thanks Mike.

You are also a very fine sketcher indeed.

Congrats on your new edition & Happy New Year!

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Re: Mars 02/01/08 new [Re: Sol Robbins]
      #2102304 - 01/07/08 12:29 AM

Excellent job everyone!

--------------------
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Re: Mars 02/01/08 new [Re: Erix]
      #2102888 - 01/07/08 11:05 AM

very nice sketch Michael, thanks for the comment on the color of my sketch, i try to approach it as accurate as possible but it's difficult! i hope you'll like the color of my next sketch as well

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Mars 06/01/08 new [Re: Kris.]
      #2102914 - 01/07/08 11:17 AM

i had very poor seeing conditions for my latest sketch literally watching through the clouds. they seem to act as a good filter, but the constant change in brightness of the martian disk is fatiguing for my eye! when the clouds dissapeared it was clear the seeing was so poor that this view would not show as much detail as some of my previous views.

i *think* a saw the north polar hood as 'jagged' and the area around Chryse was obviously lighter than the surrounding planes.
solis lacus was rotating on the disk at right but i couldn't see that. i did see sinus meridiani at the left edge but after cheking the maps, i placed it too low on the disk.
the south pole area (Argyre??) was lighter too, but not as much as Chryse.



good mars-viewing to all!

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Re: Mars 06/01/08 new [Re: Kris.]
      #2104135 - 01/07/08 08:56 PM Attachment (66 downloads)

Heres my latest sketches of Mars done tonight under better than average seeing conditions. Collimation seems to be a bit out of whack though, nevertheless the views were pretty good. I've posted the page from my log together with 'enhanced' versions giving a slightly more realistic eyepiece view.

I believe I have:

Top (20:00hrs)
Mare Erythnaem at South (though not showing as brighter feature and Mare Acidalium clearly showing at North.

Bottom (00:30hrs)
Solus Lacus at South (but not showing)
Arcadia at North.

Joe

Attachment

--------------------
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Re: Mars 06/01/08 new [Re: JoeF]
      #2104208 - 01/07/08 09:33 PM

Kris and Joe,

Great sketches.

Viewing the double digit degree central meridian on Mars has eluded me during this apparition.

Thanks,

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Re: Mars 06/01/08 new [Re: Sol Robbins]
      #2105421 - 01/08/08 01:30 PM

excellent sketches Joe, i find the colors very good and they show just how difficult it can be sometimes viewing mars. i believe you're right about the observed features. your 2 sketches and mine actually look quite alike!

Sol; i've been presented the same sides of mars also too much to my liking...


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Re: Mars 06/01/08 new [Re: Kris.]
      #2105664 - 01/08/08 03:43 PM

Kris and Joe,

Outstanding observations of Mars that are accurate and realistic. You both have recorded an impressive amount of detail over the Martian disk. Thank you for sharing them with us all.

Carlos

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Re: Mars 06/01/08 new [Re: CarlosEH]
      #2106304 - 01/08/08 08:29 PM Attachment (64 downloads)

Kris and Joe,

Nice work! Mars is shy about giving up details but you both have done a great job going after them.

I observed Mars on Jan. 8th as well under average conditions for seeing and transparency. It was clear (sort of) and temperatures were 40 warmer than my observation four days ago, so I could hardly pass up the opportunity.

It was interesting to see that the southern regions and following limb were obscured by broad clouds. Contrast was low, but that may have been caused mostly by the transparency. I was disappointed that I couldn't detect Olympus Mons--I think my collimation needs tweaked too.

The sketch was done with an HB pencil and some new watercolor pencils that I just got--they seem to blend pretty well. The blue on the f limb wasn't picked up by the scanner. I fooled around a little with the presentation, too. Hope everyone likes it.

Best to all,

Attachment

--------------------

Michael Rosolina
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Re: Mars 06/01/08 new [Re: Special Ed]
      #2106331 - 01/08/08 08:43 PM

Kris, Joe and Michael

These are all fantastic Mars sketches. You all have used color to great advantage. All of you have made excellent sketches here. I for one am thrilled --nothing but clouds for a long time now.

Frank

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Re: Mars 06/01/08 new [Re: frank5817]
      #2106458 - 01/08/08 09:51 PM

Great sketches,Kris, Joe and Micheal,i'mm glad some of you have enjoyed the mars show.

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novbabies
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Re: Mars 06/01/08 new [Re: Tommy5]
      #2106956 - 01/09/08 05:15 AM

Mike, nice representation of the low conrast !

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Re: Mars 06/01/08 new [Re: novbabies]
      #2109005 - 01/09/08 10:47 PM

Thanks, guys. Frank, Tommy--sorry the weather hasn't been favorable there in Chicagoland--I miss your take on the Red Planet. It can't stay cloudy forever...

--------------------

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1.12.08-Mars Sketch with 3" Refractor new [Re: Special Ed]
      #2114000 - 01/11/08 09:28 PM Attachment (80 downloads)

Hi,

The sky cleared. The wind died down. I broke out my little refractor & made this pencil sketch of Mars. The "Eye of Mars" was prominent. I used a Wratten 21 Orange filter for this observation. The limb brightenings were added without any filters.

A couple of my neighbors who are in middle school took a peek as well. They too saw some "fuzzy patches" on the disk. They took my sketch and said they'll do a 'show & tell' in school next week.

I used a 2H pencil, blended with my fingers and erased out the limb brightenings.

Best,

Attachment

--------------------
S.R.


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Re: 1.12.08-Mars Sketch with 3" Refractor new [Re: Sol Robbins]
      #2114061 - 01/11/08 09:55 PM

Sol, I asume you used the 80mm Planet Hunter refractor? I have been quite disappointed with the views of Mars with my 8-in f/6 newtonian, Mars was too bright. Although dimmer, I could see just as much thru my 80mm PH.

BTW, great sketch!

Terry

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Sol Robbins
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Re: 1.12.08-Mars Sketch with 3" Refractor new [Re: StarStuff1]
      #2114083 - 01/11/08 10:04 PM

Thenks Terry,

I uploaded the sketch again as it looked like it got truncated.

Yes, it is the 80mm Planet Hunter. I got mine at the last NEAF. Its purported to be a prototype. Bill Burgess seemed a bit reluctant to part with the scope. Very sharp optically and its exceeded my expectations.

I just noticed I misspelled "eyepiece" in the sketch as I was talking to my neighbors kids when finishing up the sketch.

Best,

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Tommy5
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Re: 1.12.08-Mars Sketch with 3" Refractor new [Re: Sol Robbins]
      #2114128 - 01/11/08 10:30 PM

Another great sketch, with your sharp little refractor,it is nice to see Mars spin round and round on the sketching forum as endless clouds have blocked my view for weeks ,thanks again for posting, seeing the Eye of mars for the first time in '03 was one of my highlights in shallow sky observing thanks again for posting, at least i have a lot of free time to reread your excellant book.

Edited by Tommy5 (01/11/08 10:31 PM)


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Sol Robbins
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Re: 1.12.08-Mars Sketch with 3" Refractor new [Re: Tommy5]
      #2114135 - 01/11/08 10:35 PM

Thanks T.

I hope you get out soon as Mars must be getting smaller. At least now you can start viewing it at about 7pm local time.

I'll hope you get a claering out real soon!

Best,

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Re: 1.12.08-Mars Sketch with 3" Refractor new [Re: Sol Robbins]
      #2114358 - 01/12/08 12:17 AM

Sol,

Fantastic sketch of Mars. I really enjoy the magic you work with not only the pencils but also the eraser. The blending is amazing.

Frank

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Re: 1.12.08-Mars Sketch with 3" Refractor new [Re: frank5817]
      #2114713 - 01/12/08 08:12 AM

Many thanks Frank.

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1.24.08 Mars new [Re: Sol Robbins]
      #2141577 - 01/24/08 12:02 AM Attachment (54 downloads)

Hi,

I got out tonight to check out a couple of new eyepieces. Seeing was average for this Mars sketch. I had a very hard time doing this one.

I changed techniques that I usually use in that most of the sketch was done with various blending stumps. Tortillions that are as thick as a pencil can actually be sharpened in an electric pencil sharpener. I had a bunch of these with tips varying from very sharp to very blunt, as well as degrees from clean to dirty (with graphite). I guess the main differences using these rather than pencils is accuracy and speed. Pencils can be more accurate but the stumps are faster in laying down graphite.

Anyway, here's the sketch.

Attachment

--------------------
S.R.


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frank5817
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Re: 1.24.08 Mars new [Re: Sol Robbins]
      #2141702 - 01/24/08 01:36 AM

Sol,

You really get it done with those blending stumps. I see you had reasonably good seeing too. The sketch is stunningly beautiful. Thank you for posting it here.

Frank

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Special Ed
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Re: 1.24.08 Mars new [Re: frank5817]
      #2141852 - 01/24/08 06:33 AM

Nice job, Sol. It appears the tortillons give a softer appearance to your sketch or maybe that was what you were trying to achieve to recreate the view in average seeing. My seeing is almost always average (or worse), so the appearance of the albedo features looks very familiar to me.

Speaking of the albedo, I can see Syrtis Major on the p limb with Hellas bright to the south and Sabaeus Sinus on the CM, followed by Margaritifer Sinus and Erythraeum Mare, and Chryse/Xanthe dull to the north, to name a few features you've captured. Thanks for the view!

--------------------

Michael Rosolina
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Re: 1.24.08 Mars *DELETED* new [Re: Special Ed]
      #2142585 - 01/24/08 01:47 PM

Post deleted by Sol Robbins

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Re: 1.24.08 Mars new [Re: Sol Robbins]
      #2142771 - 01/24/08 03:13 PM

fabulous last sketch Sol under average seeing conditions!
i've had a break in the clouds on tuesday (the first since 6 january!), seeing was pretty good,i'll post my sketch tomorrow. 'sadly' I saw the side with Syrtis Major *again*. but i'm happy i got a chance to observe anyway

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Re: 1.24.08 Mars new [Re: Kris.]
      #2143400 - 01/24/08 08:17 PM

Thanks to everyone.

I had to work fast whenever the seeing cleared up. That was few and far between.

Kris:

I have also spent most of this apparition viewing one or two sides Mars. I am glad that this observation was different in regard to that.

Best,

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Re: 1.24.08 Mars new [Re: Sol Robbins]
      #2143409 - 01/24/08 08:22 PM

Excellant Mars sketch,lots of subtle texture and shading,you got a really nice view of mars there.

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Re: 1.24.08 Mars new [Re: Sol Robbins]
      #2143475 - 01/24/08 08:43 PM

Very nice. Way more detail than I have been able to see or deduce, much less sketch. Roland

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Re: 1.24.08 Mars new [Re: rolandlinda3]
      #2144257 - 01/25/08 07:30 AM

Thanks very much.

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Re: 1.24.08 Mars new [Re: Sol Robbins]
      #2145045 - 01/25/08 02:36 PM Attachment (63 downloads)

Sol,

A fantastic and highly detailed observation of the red planet. You have rendered the Sinus Sabaeus region very nicely in your latest observation. Your stump (Tortillon) technique is a very useful one that allows subtle shades to be rendered. I have identified the major features (although not all) noted. Thank you for sharing it with us all.

Carlos

Attachment

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Mars 22/01/08 new [Re: CarlosEH]
      #2145131 - 01/25/08 03:15 PM

here's my sketch from last tuesday. seeing was good, i could go up to 620x, and didn't use any filters for this observation.
i think the 'spike' i saw on the edge of the preceding limb (left) is part of elysium.



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Kris

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Re: Mars 22/01/08 new [Re: Kris.]
      #2145424 - 01/25/08 05:25 PM

Kris,

Another beauty to add to your 2007-2008 Mars collection.

Frank

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Re: 1.24.08 Mars new [Re: CarlosEH]
      #2145510 - 01/25/08 06:04 PM

Thanks Carlos. As always, the annotations you've done are very much appreciated.

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Re: Mars 22/01/08 new [Re: Kris.]
      #2145522 - 01/25/08 06:09 PM

Kris,

Great high magnification sketch.

I think the dark part of Elysium is called Stymphallus Lacus. You also got Alcyonius Nodus south of the NPR. Carlos' labels on the Mars drawings are starting to rub off upon me.

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Re: Mars 22/01/08 new [Re: Sol Robbins]
      #2147708 - 01/26/08 06:50 PM

no sketch this time as seeing was too poor, but i managed to get one half decent picture of mars with a cheap digital camera holding behind the eyepiece, the result is actually better than i expected
magnification was 257x fwiw and i added some labels.
i think it's better than a similar shot of saturn taken 3 years ago with a better camera.
my next post will hopefully have a sketch with it again, this is the sketching forum but i thought i'd post it here in this long thread...



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Re: Mars 22/01/08 new [Re: Kris.]
      #2148359 - 01/26/08 11:54 PM

That is a very good digital snapshot of mars all i usually get a red globe with the faintist hint of darker detail great job.

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Re: Mars 22/01/08 new [Re: Tommy5]
      #2148418 - 01/27/08 12:26 AM

Kris,

You had the focus right on and you have a steady hand. From this one image I can see your telescope is a good one and you faithfully captured the details in your nice sketches.

Frank

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Re: Mars 22/01/08 new [Re: frank5817]
      #2149448 - 01/27/08 03:23 PM

No filters, Kris?! With my 6" Dob, I can't even dream of not using filters. It's way too bright...even during twilight. Did you not use them because of your high magnification?

I've yet to observe Mars under good seeing conditions since August (back when it was only around 7"--and yet I still am only seeing about the same amount of detail due to seeing). I sure wish for a crisp edge of Mars' globe and an image that doesn't come and go with details. Maybe this is others' experience too and I'm not alone.

--------------------
Daniel Salters

Astro-Tech 72ED
Bushnell Voyager 6" Dob
10" f/4.2 Springsonian

"The sun has one kind of splendor, the moon another and the stars another; and star differs from star in splendor." -1 Corinthians 15:41




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CarlosEH
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Re: Mars 22/01/08 new [Re: DSalters]
      #2149896 - 01/27/08 07:25 PM

Kris,

Excellent observation and images of Mars. Thank you for sharing them with us all.

Carlos

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CarlosEH
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Re: Mars 22/01/08 new [Re: CarlosEH]
      #2149901 - 01/27/08 07:28 PM Attachment (56 downloads)

I made an observation of Mars on January 27, 2008 under average (5/10) seeing conditions. Syrtis Major appeared mottled when the seeing steadied. I welcome any comments on my observation.

Date (U.T.): January 27, 2008
Time (U.T.): 02:30 (left image and 03:00 (right image)
CM: 322.8 (left image) and 330.2 (right image)
Ls: 023.0* (Early Northern Spring/Southern Autumn)
De: -2.5*, Diameter 12.6". phase 96%
Instrument: 9-inch (23-cm) F/13.5 Maksutov-Cassegrain
Magnification: 248x and 359x
Filters (Wratten): 30 (magenta) and 38A (blue)
Seeing (1-10): 5, Antoniadi (I-V): III
Transparency (1-6): 5

Notes:
02:30 U.T. (Left image , Wratten 30): The Southern limb appears very bright to extremely bright (8-9/10) with haze present (sections of Mare Australe visible beneath the haze). Hellas appears very bright to extremely bright (8-9/10). Hellespontus appears dark to dull (3-5/10). Noachis appears dusky to shaded (4-6/10). Pandorae Fretum appears dark to dusky (3-4/10). Deucalionis Regio appears bright (7/10). Iapygia Viridis appears dusky to dull (4-5/10) and mottled. Syrtis Major appears dark to dusky (4-/10) and it's southern half appears mottled, especially during moments of steady seeing. Libya appears very bright to extremely bright (8-9/10) with haze projecting over the eastern (preceding) border of Syrtis Major. Sinus Sabaeus and Sinus Meridiani appear dar to dusky (3-4/10). Aeria, Aabia, Eden, and Moab appear bright (7/10). The northern limb appears very bright to extremely bright (8-9/10). Ismenius Lacus appears dark to dull (3-5/10). The eastern (preceding) limb of Mare Acidalium and Niliacus Lacus appear dark to dull (3-5/10) projecting beyond a very bright to extremely bright (8-9/10) following (western) limb. Chryse/Xanthe appears bright to very bright (8-9/10).

03:00 U.T. (Right image, Wratten 38A): The southern limb and Hellas appear very bright to extremely bright (8-9/10). The preceding (eastern) limb appears very bright to extremely bright (8-9/10). The northern limb appears very bright to extremely bright (8-9/10). The following (western) limb appears very bright to extremely bright (8-9/10). Syrtis Major, Sinus Sabaeus, and Sinus Meridiani appear dull (5/10). Ismenius Lacus appears dull (5/10) as well.

The best of luck in your own observations of Mars. A digital image produced in Corel Painter X.

Regards,
Carlos

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frank5817
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Re: Mars 22/01/08 new [Re: CarlosEH]
      #2149923 - 01/27/08 07:45 PM

Carlos,

How wonderful is this! Beautiful color drawings and report on this observation. The seeing may have been average but the sketch pair and report are well off the scale at the great end. Stunning.

Frank

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CarlosEH
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Re: Mars 22/01/08 new [Re: frank5817]
      #2150027 - 01/27/08 08:35 PM

Frank,

Thank you for the kind compliment on my latest observation of Mars. The best of luck in your own observations.

Carlos

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Sol Robbins
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Re: Mars 22/01/08 new [Re: CarlosEH]
      #2150135 - 01/27/08 09:43 PM

Carlos,

The contrasting magenta and blue renditions are very interesting when entire albedo features appear or disappear.

Thanks,

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CarlosEH
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Re: Mars 22/01/08 new [Re: Sol Robbins]
      #2150249 - 01/27/08 10:30 PM

Sol,

Thank you for the compliment on my Mars observation. It is interesting in being able to detect features at different wavelengths over Mars and the other planets. This includes a faint albedo (dark) feature using a red (e.g. Wratten 23A) or cloud (e.g. Wratten 38A) filter.

Carlos

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Kris.
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Re: Mars 22/01/08 new [Re: CarlosEH]
      #2156288 - 01/30/08 04:04 PM

terrific sketch and colors Carlos! the side by side sketches are always interesting to see!

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Kris.
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Re: Mars 22/01/08 new [Re: DSalters]
      #2156307 - 01/30/08 04:13 PM

Quote:

No filters, Kris?! With my 6" Dob, I can't even dream of not using filters. It's way too bright...even during twilight. Did you not use them because of your high magnification?

I've yet to observe Mars under good seeing conditions since August (back when it was only around 7"--and yet I still am only seeing about the same amount of detail due to seeing). I sure wish for a crisp edge of Mars' globe and an image that doesn't come and go with details. Maybe this is others' experience too and I'm not alone.




Daniel, it's probably a combination of high power and the fact that i don't really like filters for viewing mars. however i don't doubt their usefullness, i use a #23a orange filter and a sirius optics variable filter regularly and i'm very pleased with them. it's just that sometimes i prefer to view without filters. during the opposition of 2005 i didn't use any filters at all, perhaps that's also why i'm used to the very bright image of mars thru the ep sometimes there's definately more to see with the right filter, and sometimes the view is better unfiltered. that's my opinion...

in my experience the sessions when mars stays crisp and sharp throughout long periods of time are not often. mostly it's somewhat as you describe; the details come and go with the seeing. don't give up, mars is still pretty big now. persistent bad weather really messed up my 'january-observing' too

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Kris

To be old & wise, you first gotta be young & stupid

my website

my CN sketch & picture gallery


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CarlosEH
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Re: Mars 22/01/08 new [Re: Kris.]
      #2159846 - 02/01/08 04:33 AM

Kris,

Thank you for the compliment on my latest observation of Mars. The comparison at red and blue wavelengths is interesting in the detection of the surface features and clouds/haze visible at a specific time. The best of luck in your own osbervations of Mars.

Carlos

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Kris.
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Re: Mars 22/01/08 new [Re: CarlosEH]
      #2164635 - 02/03/08 09:14 AM

here's a sketch i made yesterday under average seeing conditions. the shrinking phase is easily seen. i could see much limb brightening and some white/lighter spots just off the preceding edge. could that have been clouds or clouds on mountain tops perhaps? the area south of mare cimmerium (that's eridania & ausonia i guess?) had a greyish look to me.



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Kris

To be old & wise, you first gotta be young & stupid

my website

my CN sketch & picture gallery


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Sol Robbins
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Re: Mars 22/01/08 new [Re: Kris.]
      #2164832 - 02/03/08 10:54 AM

Great sketch Kris.

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S.R.


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unleaded55
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