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Astrophotography and Sketching >> Sketching

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Dawn Breaking across Crater Schickard
      #3650161 - 02/27/10 02:26 AM Attachment (57 downloads)

One of the many large and interesting craters on the visible lunar surface is this 230 km. diameter walled plain crater known as Schickard. This Pre-Nectarian crater is somewhat isolated from craters of equal size. It is the large, shallow floor of Schickard that presents its most interesting features and at the time of this sketch light was just beginning to spread across its floor. Tens of millions of years after this crater formed a much larger impact formed the Orientale basin, blanketing the crater with highland ejecta. This great crater can easily be seen in a modest telescope with good lighting one or two days before full moon.

Sketching:

For this sketch I used: Black Canson sketching paper, 14”x 12”, White and black Conte' pencils, a blending stump, plastic eraser. After scanning, contrast was increased (+1) using the scanner.

Telescope: 13.1 inch f/5.9 Dobsonian and 9mm eyepiece 218x
Date: 2-26-2010, 1:45 – 2:30 UT
Temperature: -6° C (21° F)
clear, calm
Seeing: Antoniadi III
Co-longitude: 57.5°
Lunation: 11.98 days
Illumination: 90.4 %

Observing Location: +41°37' +87° 47'
Oak Forest, Il.

Frank McCabe

Edited by frank5817 (03/01/10 12:35 AM)


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Uwe Pilz
scholastic sledgehammer


Reged: 05/16/08

Loc: Leipzig, Germany
Re: Dawn Breaking across Crater Schickard new [Re: frank5817]
      #3650175 - 02/27/10 02:47 AM

Simply great! I know how hard it is to sketch such a large crater. You have to cover a giant range of brightness and a vast amount of details.

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S1mas
sage


Reged: 12/08/09

Loc: Lithuania
Re: Dawn Breaking across Crater Schickard new [Re: Uwe Pilz]
      #3650271 - 02/27/10 06:27 AM

Impressive Frank

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Dawn Breaking across Crater Schickard new [Re: S1mas]
      #3650319 - 02/27/10 07:49 AM Attachment (35 downloads)

Frank, impressive sketch... I have still a lot to learn... I sketched the same crater yesterday and had a nice view on the ejecta you mentioned. It makes the craterfloor looking like a tricolor!
I'm used to sketch the Moon with a ETX-70. Two weeks ago I bought a WO Zenithstar 80 Doublet Fluo and tested it outside for the first time. Wow! That's something else than the little Meade! But more detail makes it more difficult to sketch... I still struggle with getting all the grey-differences right.

26/02/2010, 21.30-22.30 UT, WO Zenithstar 80 @ x139, 95%, 12.8 days, alt 53°, black & white Conté pencils on black paper, scanned and mirrored.


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Dawn Breaking across Crater Schickard new [Re: Jef De Wit]
      #3650321 - 02/27/10 07:50 AM Attachment (34 downloads)

And here my new beautie...

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frank5817
Postmaster
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Reged: 06/13/06

Loc: Illinois
Re: Dawn Breaking across Crater Schickard new [Re: Jef De Wit]
      #3650578 - 02/27/10 10:58 AM

Uwe, S1mas and Jef,

Thank you for the nice words.

---
Jef,

That is a great sketch of Schickard. With the floor well illuminated you captured those two dark lava features very well.
Impressive looking scope. Thanks for showing us this beauty.

Frank

Edited by frank5817 (02/27/10 06:17 PM)


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JayinUTModerator
I'm not Sleepy
*****

Reged: 09/19/08

Loc: Utah
Re: Dawn Breaking across Crater Schickard new [Re: frank5817]
      #3650603 - 02/27/10 11:13 AM

Frank,

Nicely done, I always enjoy your moon sketches. They help me in mine when the storms of late allow me to view.


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Tommy5
Carpal Tunnel


Reged: 03/28/04

Loc: Chicagoland
Re: Dawn Breaking across Crater Schickard new [Re: JayinUT]
      #3651269 - 02/27/10 05:40 PM

Cool lunar sketch, glad you able to catch some observing time, nice use of texture and shadows congrads.

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Dawn Breaking across Crater Schickard new [Re: Tommy5]
      #3651366 - 02/27/10 06:20 PM

Jay and T5,

Thanks for your comments. Seeing wasn't the best and it remains just a bit too cold for my sketching pleasure.
I hope you two get a chance to get out there soon.

Frank


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mathteacher
Carpal Tunnel
*****

Reged: 05/13/07

Loc: Oakland, CA
Re: Dawn Breaking across Crater Schickard new [Re: frank5817]
      #3651454 - 02/27/10 07:09 PM

Frank, simply awesome.

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Dawn Breaking across Crater Schickard new [Re: mathteacher]
      #3652060 - 02/28/10 01:29 AM

Ging-Li,

Thank you for your compliment. The site of sunrise across a large lunar crater is really something to see.

Frank


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CarlosEH
Postmaster
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Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Dawn Breaking across Crater Schickard new [Re: frank5817]
      #3652100 - 02/28/10 02:43 AM

Frank,

An excellent observation and report on Schickard on the dawn terminator. The detail is interesting over the floor of Shickard. Thank you for sharing it with us all.

Jef- An excellent observation of Schickard as well. You have recorded detail over the floor of Schickard. Your new instrument looks great! I hope that you enjoy many excellent views of the heavens with this new instrument.

Carlos


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Dawn Breaking across Crater Schickard new [Re: CarlosEH]
      #3652178 - 02/28/10 05:43 AM

Frank and Carlos, thanks for the nice words.

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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Dawn Breaking across Crater Schickard new [Re: Jef De Wit]
      #3653428 - 02/28/10 08:52 PM

Carlos,

Thank you for your nice words. I was making this close sketch while you were sketching your beautiful Moon-Mars pair.

Frank


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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Dawn Breaking across Crater Schickard new [Re: frank5817]
      #3654322 - 03/01/10 12:18 PM

Frank

, nice sketch .

,

Tom


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mike bacanin
Carpal Tunnel
*****

Reged: 03/19/07

Re: Dawn Breaking across Crater Schickard new [Re: niteskystargazer]
      #3654497 - 03/01/10 01:39 PM

Frank,

Lovely sketch indeed!

Mike


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ladip63
scholastic sledgehammer


Reged: 10/17/07

Loc: the dark skies of Texas
Re: Dawn Breaking across Crater Schickard new [Re: mike bacanin]
      #3654903 - 03/01/10 05:05 PM

Just gorgeous Frank.
Lynn


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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Dawn Breaking across Crater Schickard new [Re: ladip63]
      #3655009 - 03/01/10 05:53 PM

Tom, Mike and Lynn,

Thank you all for your nice words about my lunar sketch.

Frank


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