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Old 22-08-2011, 03:38 PM
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iceman (Mike)
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Review: The Guan Sheng Optical 10" f/4 Newtonian Reflector

Graham Stevens has written a great review of The Guan Sheng Optical 10" f/4 Newtonian Reflector.

You can read the review on the IceInSpace Reviews page, or directly by clicking on the link below:

The Guan Sheng Optical 10" f/4 Newtonian Reflector

Thanks to Graham for writing the review. If you'd like to contribute a review or article to IceInSpace, please get in touch via our Write for IceInSpace page.

Last edited by iceman; 29-08-2011 at 05:11 AM.
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Old 29-08-2011, 05:11 AM
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iceman (Mike)
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Old 02-07-2018, 09:14 PM
Jonatan (JonatanSutrisna)
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Hi Graham. Thanks for the review. Have you ever tried to compare the images of inside - outside focus (choose a medium bright star). If they are about same pattern means good quality. Otherwise could be some mirror problems.
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