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Old 02-03-2008, 12:51 PM
mark3d
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mark3d is offline
 
Join Date: May 2007
Location: Adelaide
Posts: 268
having said that it would be really good to fabricate a small disc with a hole in the centre to make the barlowed laser a fine point, as outlined in the S&T article.

that is a bit of a problem though because if that is not precise the collimation will always be out (and my collimator doesnt take threads so id need to make a 2" one for the barlow).
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