Wot tha h....appened to my dark frame
I'm out imaging NGC3201 tonight and snagged a dozen or so light frames first and then started to take some darks. Here are the results. First shot is the unprocessed glob and the second shot is the dark. And yes I did put the cover on the scope first. The first 4 darks are like this but getting progressively fainter until the 5th dark looks clear.
Details: SBIG ST7XME, -15deg, exposures 2 min.
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