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Old 08-01-2015, 07:31 PM
Alchemy (Clive)
Quietly watching

Alchemy is offline
 
Join Date: Jul 2007
Location: Yarra Junction
Posts: 3,044
Quote:
Originally Posted by dylan_odonnell View Post

Sorry for the silly questions! When I use a DSLR with the same image train I can get focus .. I crank up the ISO in Backyard EOS, twiddle focus to see airy disks then move in from there. Typically about 20 small turns in one direction.

d
Distance from t adapter to camera chip will need be the same for both cameras, if the CCD chip is closer (usually) then you can add spacers, Usually focal reducers have a standard ideal distance to the film plane from the reducer. Either side of that will often cause your corner stars to become distorted
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