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Old 26-09-2012, 10:04 PM
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lepton3 (Ivan)
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Join Date: Jan 2007
Location: Adelaide, Australia
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Uranus - Sep 25th

I wasn't sure whether to post this image, but you don't see many images of Uranus so I figure may as well.

The seeing was pretty poor last night, but I set up anyhow mainly as an exercise to get an idea of the camera settings and capture and processing methods that might be involved in getting a decent image when the conditions are better.

This is a dim target, and the fact there was a 40 to 50 m/s jetstream made it difficult to focus. Therefore I did not use any barlow, just the native 2.8m f/10 focal length of the C11. Overall, the final image has been digitally zoomed by 2.5x.

The image is IR+RGB. The IR channel was heavily contrast stretched to bring out some mottling. To be honest I expect this is more processing artifact than actual planet detail -- I think the seeing was probably too poor to allow any detail.

I plan to try for real if the jetstream ever drops below 20 m/s!

-Ivan
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