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Your are laughing. You are gaining on two fronts. Your F8.3 is much faster than your Mak was, and it still has enough focal length to make
it worthwhile imaging some of the smaller DSOs. Off the top of my head
I imagine that it will require subs of around the same duration as an 80mm f/5 on any given object, but will have better resolution due to it's larger aperture. The CA will be a bit less noticeable, but you really need
f/11 or more to make a big improvement.
raymo
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