CLOUDY NIGHTS FORUM ARCHIVES
"Live Forums" can be found here: Live Forums


Astrophotography and Sketching >> Sketching

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | (show all)
Acheron
scholastic sledgehammer


Reged: 08/07/05
Posts: 813
Loc: Croatia, Velika Gorica
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...


Post Extras: Print Post   Remind Me!   Notify Moderator  
Kris.
Carpal Tunnel


Reged: 09/16/04
Posts: 1677
Loc: Belgium
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

my CN sketch & picture gallery


Post Extras: Print Post   Remind Me!   Notify Moderator  
rodelaet
Post Laureate


Reged: 04/28/06
Posts: 3185
Loc: 5056' N - 458' E (Belgium)
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.



Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster


Reged: 01/19/05
Posts: 6714
Loc: Pembroke Pines, Broward County...
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

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
DSalters
scholastic sledgehammer


Reged: 03/03/07
Posts: 945
Loc: High Ridge, MO (St. Louis)
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




Post Extras: Print Post   Remind Me!   Notify Moderator  
frank5817
Postmaster


Reged: 06/13/06
Posts: 7212
Loc: Illinois
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

--------------------
My Gallery


Post Extras: Print Post   Remind Me!   Notify Moderator  
Acheron
scholastic sledgehammer


Reged: 08/07/05
Posts: 813
Loc: Croatia, Velika Gorica
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)


Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster


Reged: 01/19/05
Posts: 6714
Loc: Pembroke Pines, Broward County...
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

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
Kris.
Carpal Tunnel


Reged: 09/16/04
Posts: 1677
Loc: Belgium
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?



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

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

my website

my CN sketch & picture gallery


Post Extras: Print Post   Remind Me!   Notify Moderator  
Sol Robbins
Carpal Tunnel


Reged: 12/01/03
Posts: 1985
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!

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
Acheron
scholastic sledgehammer


Reged: 08/07/05
Posts: 813
Loc: Croatia, Velika Gorica
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...


Post Extras: Print Post   Remind Me!   Notify Moderator  
Special Ed
Postmaster


Reged: 05/18/03
Posts: 6339
Loc: Greenbrier Co., WV 38N, 80W
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


Post Extras: Print Post   Remind Me!   Notify Moderator  
frank5817
Postmaster


Reged: 06/13/06
Posts: 7212
Loc: Illinois
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

--------------------
My Gallery


Post Extras: Print Post   Remind Me!   Notify Moderator  
rusirius6278
Carpal Tunnel


Reged: 11/03/06
Posts: 1722
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...



Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster


Reged: 01/19/05
Posts: 6714
Loc: Pembroke Pines, Broward County...
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

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
rusirius6278
Carpal Tunnel


Reged: 11/03/06
Posts: 1722
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...



Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster


Reged: 01/19/05
Posts: 6714
Loc: Pembroke Pines, Broward County...
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

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
rusirius6278
Carpal Tunnel


Reged: 11/03/06
Posts: 1722
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...



Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster


Reged: 01/19/05
Posts: 6714
Loc: Pembroke Pines, Broward County...
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

Attachment

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
frank5817
Postmaster


Reged: 06/13/06
Posts: 7212
Loc: Illinois
Re: mars sketches 16-19/12/07 [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

--------------------
My Gallery


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | (show all)


Extra information
0 registered and 2 anonymous users are browsing this forum.

Moderator:  Charlie Hein, cildarith 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 21474

Jump to

CN Forums Home



Cloudy Nights Sponsor: Astronomics