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Chris,Its a bit late now the horse has bolted, but you should have got the
SW f/5 coma corrector, its designed specifically for their f/5 Newts no spacers are required, and beautiful stars to the edge of the field with the scope you got from me. I've just passed it on to another member. My poor old octogenarian brain is a bit of a mess, on looking back I discovered it was also Darrellx who had trouble getting his cameras to focus, so I apologise for the confusion..
The larger scope won't give you a better exposed image, but it will give
you a deeper one. A couple of years ago I posted a series of single frame
images, and numerous members expressed their surprise at what an 8"
can do in 30 or 40 seconds.
raymo
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