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Old 28-05-2015, 04:21 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
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Not sure about that technically. Why would you subtract a master bias from a master dark? The master dark already has the master bias component in it and you would want that when you subtract it from your light as the light would have the white edge in it.

As I understand it bias are more for flats unless you want to scale your darks which is handy at times.

Greg.
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