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Old 16-08-2009, 09:08 AM
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Tunnel Vision

AlexN is offline
Join Date: Mar 2008
Location: Brisbane, Australia
Posts: 6,708
I used one in my C11, and achieved the best results with it. I was planning to get another one for use with the 8" RC.. When imaging with a longer focal length, I do prefer to guide at a similar length.. an OAG is the best way to achieve that, provided your guide camera is sensitive enough to pick up stars (your QHY5 should be fine!)

I had absolutely no issues with mine, worked a treat..
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