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Old 13-09-2009, 10:07 PM
TrevorW
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TrevorW is offline
 
Join Date: Aug 2006
Location: Western Australia
Posts: 7,864
Check collimation how do the focal rings appear out of focus ae they concentric

I know when collimating mine two ehads are better than one

a recent Ronchi test conducted on my mirror indicated nothing out of the ordinary
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