Telescope Reviews: Crater Janssen

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Astrophotography and Sketching >> Sketching

Pages: 1

Uwe Pilz
scholastic sledgehammer

Reged: 05/16/08

Loc: Leipzig, Germany

Crater Janssen
#3132652 - 05/28/09 04:41 PM Attachment (50 downloads)

Janssen is a very old crater form the pre Nectarian period. It is very battered from many younger craters. It's outline is only visible close to the terminator - like this evening.
In the monthes May and June the young moon can be observed in a very good position: High in the evening sky.

Jannsen showed lots of details. I tried to sketch as many as possibe in ~20 minutes. Some of the subtle detailed I failed sketching - shadows were moving to fast.

(120/600 refractor-112x)

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frank5817
Postmaster

Reged: 06/13/06

Loc: Illinois

Re: Crater Janssen new

[Re: Uwe Pilz]
#3132908 - 05/28/09 07:01 PM

Uwe,

Getting the features on paper fast is the make or break step of a sketch near the terminator. It's like a game of beat the clock. I have sketches with impossible shadows because I took too long.
Your sketch here is excellent for a 20 minute sketch. Thank you for sharing it with us all.

Frank

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CarlosEH
Postmaster

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...

Re: Crater Janssen new

[Re: frank5817]
#3133043 - 05/28/09 08:30 PM

Uwe,

An excellent observation of Janssen showing a good amount of detail. Janssen is a complex crater and would be difficult to render in 20 minute but you have done a very good job. Thank you for sharing it with us all.

Carlos

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kraterkid
Post Laureate

Reged: 03/07/05

Loc: Jacumba, California

Re: Crater Janssen new

[Re: CarlosEH]
#3134756 - 05/29/09 07:10 PM

Alright Uwe!

A wonderful sketch capturing so much of the detail in this complex crater. I love the way you dealt with the shadows. I was out observing Janssen the same night and your rendition is marvelous!

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Sol
Carpal Tunnel

Reged: 08/20/07

Loc: Powys, Wales, UK

Re: Crater Janssen new

[Re: kraterkid]
#3136324 - 05/30/09 06:53 PM

A good sketch of that complex area Uwe, your technique has moved on a lot since you were posting in the solar forum.

Mark

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rolandlinda3
Post Laureate

Reged: 01/24/06

Loc: Crozet VA 22932

Re: Crater Janssen new

[Re: Uwe Pilz]
#3136751 - 05/31/09 12:01 AM

that is a lot of work for 20 minutes. nice sketching. you could try some quick work with a blending stump or stick...I have tried that when I am in a hurry at the end of a sketch. It seems to help bring out a little more without much time added. Roland

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