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Flats overcorrecting - anyone else had this?
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15-09-2011, 08:09 AM
multiweb
(Marc)
ze frogginator
Join Date: Oct 2007
Location: Sydney
Posts: 22,062
Your flat needs to have the bias subtracted from it or it won't scale correctly when you divide it in your subs. That's quite an important point.
With the QHY8 I aim for 9500 ADU or where about in the brightest part of the flat.
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