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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!

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Sol Robbins
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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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Kris.
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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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Kris

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

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Sol Robbins
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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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Tommy5
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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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rolandlinda3
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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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Roland
Blog: www.rolandlinda3.wordpress.com
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Sol Robbins
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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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CarlosEH
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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

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Kris.
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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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frank5817
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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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Sol Robbins
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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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Sol Robbins
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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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Kris.
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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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Kris

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Tommy5
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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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frank5817
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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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DSalters
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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.

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Daniel Salters

Astro-Tech 72ED
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"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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