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Written by DeadGekko   
Saturday, 13 June 2009 21:37

Well I figured out tonight what was up with my scope.  I pinched my main mirror when I put the mirror back in the holder.  I had collimated it correctly twice.  After searching the net by images I found some that looked like what I was seeing.  This lead to the explanation of pinched optics.  I've read many articles on cleaning a mirror and collimating.  I don't remember anything warning about pinched optics.  This seems a great oversight.  So here is my warning, be careful about how tight you fasten down your primary.  I don't have any images to show.  Though I can say that the heart shaped out of focus image  is the tell tail sign. 

This site has a great collimation how to and includes an image of pinched optics.  Wish me better luck next time.   Hopefully tomorrow I'll get everything right.

Last Updated on Sunday, 14 June 2009 00:07