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Astrophotography and Sketching >> Sketching

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
two craters from a low Moon
      #3657964 - 03/03/10 09:40 AM Attachment (60 downloads)

The Moon was very low in the sky the two last nights. As consequence the seeing was not so good, but still the Moon was a beautiful sight in the telescope.
Crater Langrenus had a lot of detail to offer, even in a small refractor. A pity that I put the central mountains not in "middle" of the crater
Crater Hahn showed also nicely his central mountains (this time in the middle!). But I messed up the SW of the crater.
Hope you like it.

Crater Langrenus, 2/3/2010, 22.40-23.20 UT, 16.8 days, 92.6 %, alt 18°, 8 cm refractor @ x138, scanned and mirrored


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3657969 - 03/03/10 09:41 AM Attachment (40 downloads)

Crater Hahn, 1/3/2010, 22.10-22.50 UT, 15.8 days, 97.6 %, alt 26°, 8 cm refractor @ x138, scanned and mirrored

Edited by Jef De Wit (03/03/10 01:10 PM)


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S1mas
sage


Reged: 12/08/09

Loc: Lithuania
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3658005 - 03/03/10 09:59 AM

I like your technic with moon craters Jef, very original and attractive. Thanks for sharing.

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niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3658148 - 03/03/10 11:29 AM

Jef,

, nice sketch

,

Tom


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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: two craters from a low Moon new [Re: niteskystargazer]
      #3658181 - 03/03/10 11:56 AM

Jef,

These are both excellent sketches. You do a very nice job isolating your craters in your sketches. That is more difficult to do than most would think.

Frank


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ladip63
scholastic sledgehammer


Reged: 10/17/07

Loc: the dark skies of Texas
Re: two craters from a low Moon new [Re: frank5817]
      #3658196 - 03/03/10 12:05 PM

Jeff,
WOW! What an unique way of sketching the craters.

Lynn


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rerun
super member


Reged: 03/22/09

Loc: Germany Mülheim an der Ruhr
Re: two craters from a low Moon new [Re: ladip63]
      #3658262 - 03/03/10 12:34 PM

Hallo Jef,

I like your b/w sketches ,the craters Langrenus and Hahn look great.

CS

Markus


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: two craters from a low Moon new [Re: rerun]
      #3658336 - 03/03/10 01:09 PM

To all, thanks for the kind words.

I struggled a lot with sketching on a black paper with a white pencil. I thinks it works best when the target is at the terminator. The image looks mostly b/w, with not so much albedo features.

When you sketch something farther away from the terminator, you get more albedo differences. I have a hard time to draw those grey-tones with a white Conté pencil. Maybe a normal pencil and white paper is more suited. Or a grey paper. I will try that in the future.

@Frank: Isolating the crater is a matter of limiting the amount of detail to sketch. Otherwise it takes to long.

Edited by Jef De Wit (03/03/10 01:13 PM)


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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3659410 - 03/03/10 11:25 PM

Jef,

What kind of time intervals do you usually spend on a crater sketch?
Have you tried blending in a little bit of black Conte' to get intermediate tones?

I personally do not like to spend more than an hour and a half on a crater sketch and less if on the terminator close to the equator.

Frank


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mathteacher
Carpal Tunnel
*****

Reged: 05/13/07

Loc: Oakland, CA
Re: two craters from a low Moon new [Re: frank5817]
      #3659518 - 03/04/10 12:28 AM

Very nice technique!

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: two craters from a low Moon new [Re: mathteacher]
      #3660066 - 03/04/10 10:41 AM

Mathteacher, thanks.

Frank, it takes mostly one hour to finish a moonsketch at the EP. Those two craters took me 40 minutes each.
I tried to blend white Conté to get the intermediate tones, but I'm not satisfied with the result. I never tried black Conté. How can it work on a black paper?


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Uwe Pilz
scholastic sledgehammer


Reged: 05/16/08

Loc: Leipzig, Germany
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3660408 - 03/04/10 01:42 PM

Dear jef,

I like your sketches. Thank you!


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: two craters from a low Moon new [Re: Uwe Pilz]
      #3661668 - 03/05/10 01:15 PM

Uwe, thanks for the kind words.

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Kris.
Carpal Tunnel
*****

Reged: 09/16/04

Loc: Belgium
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3663638 - 03/06/10 12:59 PM

great craters Jef, as Frank says; it's not an easy target!

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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: two craters from a low Moon new [Re: Kris.]
      #3667038 - 03/08/10 05:31 AM

Kris, thanks. Did you already looked at Saturn? Yesterday it was beautiful in the 12" and much "bigger" than Mars :-)

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markseibold
Carpal Tunnel


Reged: 01/19/08

Loc: Portland Oregon
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3667292 - 03/08/10 09:58 AM

Jef

I really like these crater sketches
They look like abstract masterpieces to me! I think you are the Picasso of astronomy sketching! You have developed a unique style.

You know I am not the one for technical accuracy but instead tend to lean toward the art.

Keep those great artistic lunar sketchies coming!

Mark

Edited by markseibold (03/08/10 09:59 AM)


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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: two craters from a low Moon new [Re: markseibold]
      #3668884 - 03/09/10 12:57 AM

Jef,
You said,
"...
I tried to blend white Conté to get the intermediate tones, but I'm not satisfied with the result. I never tried black Conté. How can it work on a black paper? "

The white does not cover the black very well so you can either put a light touch of black on the paper where you want an intermediate tone and then put a little touch of white on top of that- it will come out grey. Practice on a scrap of black paper or you can touch the black conte' to a white area and use a blending stump. Either way it should work. I never have used grey pastels.

Frank


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CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: two craters from a low Moon new [Re: frank5817]
      #3669365 - 03/09/10 09:39 AM

Jef,

Excellent observations of Hahn and Langrenus. You have recorded the walls and shadows of the craters very nicely. Thank you for sharing them with us all.

Carlos


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: two craters from a low Moon new [Re: CarlosEH]
      #3669926 - 03/09/10 01:43 PM

Mark and Carlos, thanks!

Frank, thanks for the explination. I will experiment a little bit with your technique. We will see how it works out.


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EddieH
member


Reged: 12/28/09

Loc: Northern England
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3672766 - 03/10/10 04:46 PM

Jef,

Excellent renditions of the two lunar craters.

Eddie


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Kris.
Carpal Tunnel
*****

Reged: 09/16/04

Loc: Belgium
Re: two craters from a low Moon new [Re: Jef De Wit]
      #3674565 - 03/11/10 12:42 PM

Quote:

Kris, thanks. Did you already looked at Saturn? Yesterday it was beautiful in the 12" and much "bigger" than Mars :-)




yes i have, but seeing was not great on the ninth! couldn't see the cassini division!


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: two craters from a low Moon new [Re: Kris.]
      #3676989 - 03/12/10 03:28 PM

Thanks Eddie.

@ Kris: I didn't catch the Cassini Division either, but I could see easily between the planet and the ring. Detail on the surface looks even more difficult than Mars


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