Thread: WANTED: Sight tube collimation device
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Old 22-06-2006, 10:39 AM
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asimov (John)
Planet photographer

asimov is offline 		 
Join Date: May 2005
Location: Bundaberg
Posts: 8,819
I made one using 2" exhaust tubing. 2" exhaust tubing needs to be lathed down slightly to fit the 2" focuser though. No crosshairs.