29-10-2018, 07:04 PM
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Moderator
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Join Date: Aug 2005
Posts: 25,793
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Quote:
Originally Posted by RickS
Flats also correct for vignetting and variation in sensitivity between pixels (which causes fixed pattern noise.) I doubt that you'll find many folks producing high quality astro images that don't do flat-field correction.
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Quote:
Originally Posted by multiweb
+1 Always calibrate your subs. Flat fielding is a part of it.
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So true !!
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