I have been doing some more reading and I have come across a plausible reason for doing separate bias frames... if you take bias frames then you can scale dark frames and reuse them for different length exposures at the same temperature. As H says, this is not essential, but it can potentially reduce the time spent taking dark frames in some situations.
Cheers,
Rick.
Quote:
Originally Posted by Octane
Rick,
The bias is included in the darks and therefore when subtracting darks from lights, the bias is removed automatically.
H
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