Thread: Seeking advice on 10" scopes (or is that ED80s?)
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  #12  
Old 10-03-2006, 11:12 AM
MarkN
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Join Date: Aug 2005
Location: Wollongong NSW
Posts: 111
One thing not mentioned above which may be relevant is the very high central obstruction factor in Schmidt-Newts; up to 40%. Your effective aperture will be much less than the nominal.

Mark.
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