Quote:
Originally Posted by Somnium
what i am getting at is what exactly is it about the bigger bucket. if the seeing wont allow you to get below .39" in resolution for DSO imaging what benefit does that extra aperture give? is a 20" f4 going to pick up more detail than a 10" f8 shooting for twice the time? or are there really circumstances where .39" of resolution really would be the limiting factor?
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for systems with equal sampling etc, f8 is going to require 4x the time of an f4.