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Old 07-01-2014, 01:48 PM
raymo
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raymo is offline
 
Join Date: Sep 2011
Location: margaret river, western australia
Posts: 6,070
Nice shot. My 80mm is only an achro, so I'm limited to less bright
objects as far as imaging goes.I assume that your ED 80 is around
450mm f/l, so if you used prime focus but added a 2x barlow you would
get 900 or so mm. My posted shot was 1000mm plus barlow, so you would get a shot about half the size of mine, which would be acceptable.
Obviously you could also use EP projection.
raymo
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