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Old 19-02-2008, 08:34 AM
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rmcpb (Rob)
Compulsive Tinkerer

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Join Date: Jan 2005
Location: Blue Mountains, NSW
Posts: 1,766
I agree, its probably the seeing and collimation. My 8" scope is virtually the same as yours optically and its only on the better nights that I use lenses that are shorter than 10mm.
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