Quote:
Originally Posted by ericwbenson
I agree with the pre-flash decision, my camera has it but I don't use it either. What cooler temperature are you using? I do 30min subs for almost everything at -25C and don't see such ghosting on field stars. It could be the 'CCD lottery' unfortunately. Processing them out would be a chore, remembering the order of the subs to now the previous exposure position, etc, certainly only a nice to have.
EB
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Chip normally at -30C. The colder it is, the less strong the residual image, but the longer it takes to go away.