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Enhanced Uranus showing Polar Cap and possible Aurora

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M45

Started by Steve OK, 01/02/2009 11:48PM
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Posted 01/02/2009 11:48PM | Edited 01/02/2009 11:50PM Opening Post
Steve Mathis
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Join Date: Jan 2006

Location: Oklahoma City OK, US

Posts: 532

Another from the same dark-sky trip...The Pleiades. Not a great job framing. This is 7 x 5 min, ISO 1600. Same camera and scope as in the above post. Thanks for looking!

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Steve OK's attachment for post 45096
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Posted 01/02/2009 11:50PM #1
Ivan Ong
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Location: Charlotte NC, US

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Nice! Your focusing and tracking is very good indeed. Question: I notice the pink chip noise on the top left. Did you do dark frame subtraction, or was this after the dark subtraction? I can never properly remove my pink doughnut even after dark frame subtraction.

Ivan
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