Thread: Back focus problem
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Old 23-04-2008, 04:46 PM
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peter_4059 (Peter)
Big Scopes are Cool

peter_4059 is offline 		 
Join Date: Jun 2007
Location: SE Tasmania
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There's an article on this forum that explains how to make the measurements - have a look in the projects and articles section - it's probably under astrophotography.
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