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rolandlinda3
Carpal Tunnel
Reged: 01/24/06
Posts: 1612
Loc: Crozet VA 22932
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The link takes you to a post on another forum and contains a sketch done on June 2 with a 4 inch refractor and a sketch done in May 2007 with a 12.5 inch Dob. Both, like many of mine, are done by studying the output to an astro video camera on a high resolution monitor. I thought some folks might be interested in the sketches. I also slipped in an encouragement to sketch since that group is generally not predisposed to pull out a sketch pad. Hope you enjoy.
Roland
"video" forum post
The sketch alone if you don't want to read the post:
june 2 sketches: m104 and m13
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rodelaet
Carpal Tunnel
Reged: 04/28/06
Posts: 2655
Loc: 50°56' N - 4°58' E (Belgium)
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Interesting to compare, Roland. 
The camera has a kind of similar response to aperture as the human retina. The camera has the higher gain, but the human eye has the larger dynamic range.
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Rony
My Astronomy Sketches
My Binocular Sketches
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