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Old 04-04-2012, 07:12 PM
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Satchmo (Mark)
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Satchmo is offline
Join Date: Dec 2005
Location: Sydney
Posts: 1,858

Thanks for the report . You really need to test your mirror on stars as that will tell you something about your mirror. A quality 100 lpi grating at focus will give you even more detail about overall correction and zones. It is hard to tell anything much by looking at the Moon in between sharp and blurry at 5 X magnification per inch of aperture.
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