Thread: Flats with Grid Pattern?
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Old 20-01-2023, 03:53 PM
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gregbradley
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gregbradley is offline 		 
Join Date: Feb 2006
Location: Sydney
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Do you subtract a bias from your flat?

I used to get grid patterns sometimes in bias images using a 694CCD. They would callibrate out usually (not always).

Greg.
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