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Mars Observations 2007-08

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#1 Special Ed  Happy Birthday!

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Posted 07 October 2007 - 09:51 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... :)

#2 rolandlinda3

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Posted 07 October 2007 - 10:46 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

#3 frank5817

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Posted 08 October 2007 - 01:22 AM

Michael,

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

Frank :)

#4 novbabies

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Posted 08 October 2007 - 04:22 AM

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

#5 Jeremy Perez

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Posted 08 October 2007 - 09:58 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.)

#6 Kris.

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Posted 08 October 2007 - 10:58 AM

great report & sketch Michael!

#7 Kris.

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Posted 08 October 2007 - 11:17 AM

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 :p

#8 Acheron

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Posted 08 October 2007 - 12:23 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
Posted Image.

#9 Tommy5

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Posted 08 October 2007 - 12:57 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.

#10 Special Ed  Happy Birthday!

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Posted 08 October 2007 - 01:25 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. :grin:

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. ;)

#11 Special Ed  Happy Birthday!

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Posted 08 October 2007 - 01:53 PM

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.

#12 Sol Robbins

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Posted 08 October 2007 - 02:23 PM

Great start to the upcoming Mars mania.

Thanks,

#13 kraterkid

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Posted 08 October 2007 - 03:23 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! :waytogo:

Vedran, that is a great sketch! :bow:

#14 frank5817

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Posted 08 October 2007 - 09:34 PM

Vedran,

Excellent color sketch of the red planet. :bow: :cool: :bow:

Frank :)

#15 Acheron

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Posted 08 October 2007 - 10:46 PM

Thanks on comments!

I'll post new sketch whenever I can.

#16 Special Ed  Happy Birthday!

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Posted 09 October 2007 - 05:00 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. :)

#17 Special Ed  Happy Birthday!

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Posted 09 October 2007 - 08:51 PM

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 :p


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.

#18 CarlosEH

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Posted 09 October 2007 - 09:56 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

#19 KevinP

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Posted 10 October 2007 - 12:19 AM

Lovely sketch and observation Michael.

#20 Kris.

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Posted 10 October 2007 - 02:00 PM

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 :p


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 :question:) for all my sketches.

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

#21 rodelaet

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Posted 10 October 2007 - 02:40 PM

Michael & Vedran : great idea and excellent observations.

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

#22 Special Ed  Happy Birthday!

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Posted 10 October 2007 - 08:28 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. :)

#23 Sol Robbins

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Posted 13 October 2007 - 07:54 AM

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,

Attached Files



#24 Kris.

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Posted 13 October 2007 - 01:38 PM

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

#25 kraterkid

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Posted 13 October 2007 - 03:00 PM

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






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