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Old 14-06-2010, 07:26 PM
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[1ponders] (Paul)
Retired, damn no pension

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Join Date: Nov 2004
Location: Obi Obi, Qld
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You do if you are taking flats Peter, but if you want to just test your CCD for read noise, ADU, linearity and Transfer efficiency then this method is simple and straight forward.
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