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)
Kris.
Carpal Tunnel


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

my website

my CN sketch & picture gallery


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


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

my CN sketch & picture gallery


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 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
My CN Gallery


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


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

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
molniyabeer
Confused and Asleep


Reged: 01/08/05
Posts: 3434
Loc: Albuquerque, NM
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



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


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

my website

my CN sketch & picture gallery


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


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

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
Erix
Toad Lily


Reged: 12/25/04
Posts: 24022
Loc: Texas, USA
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
PCW Memorial Observatory


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


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



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


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



Post Extras: Print Post   Remind Me!   Notify Moderator  
Catapoman
Pooh-Bah


Reged: 06/06/03
Posts: 1087
Loc: VA
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.




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


Reged: 12/01/03
Posts: 1985
Re: Mars Observations 2007-08 new [Re: Catapoman]
      #2031567 - 12/05/07 10:52 PM

Excellent!!

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


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


Reged: 09/16/04
Posts: 1677
Loc: Belgium
Re: Mars Observations 2007-08 [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

my CN sketch & picture gallery


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


Reged: 01/19/05
Posts: 6714
Loc: Pembroke Pines, Broward County...
Re: Mars Observations 2007-08 [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

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


Post Extras: Print Post   Remind Me!   Notify Moderator  
Catapoman
Pooh-Bah


Reged: 06/06/03
Posts: 1087
Loc: VA
Re: Mars Observations 2007-08 [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.




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


Reged: 11/03/06
Posts: 1722
Re: Mars Observations 2007-08 [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...



Post Extras: Print Post   Remind Me!   Notify Moderator  
Catapoman
Pooh-Bah


Reged: 06/06/03
Posts: 1087
Loc: VA
Re: Mars Observations 2007-08 [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.




Post Extras: Print Post   Remind Me!   Notify Moderator  
Rick Woods
Postmaster


Reged: 01/27/05
Posts: 11940
Loc: Inner Solar System
Re: Mars Observations 2007-08 [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."


Post Extras: Print Post   Remind Me!   Notify Moderator  
Catapoman
Pooh-Bah


Reged: 06/06/03
Posts: 1087
Loc: VA
Re: Mars Observations 2007-08 [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.




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


Reged: 09/16/04
Posts: 1677
Loc: Belgium
Re: Mars Observations 2007-08 [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

my CN sketch & picture 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 15 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: 21468

Jump to

CN Forums Home



Cloudy Nights Sponsor: Astronomics