Quote:
Originally Posted by tornado33
Mike has the Aurora Flat Field Panel which very evenly illuminates the scope for the best possible flat. Ive never had luck with sky flats theres always still some gradient in them.
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I might be mistaken but I think the concentric ring effect I see in Dave's RASA images is not from sky gradients but use of incorrectly exposed flats...?
Given the location of the ca mera on these socpes, use of a flat field panel would require a dew extension tube of course.
Mike