Email your queries to scopedoctor@skyatnightmagazine.com
I have a Celestron 9.25-inch telescope and want to keep it in top condition. Is it worth getting it professionally serviced?
BOB GOODENOUGH
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Email your queries to scopedoctor@skyatnightmagazine.com
I have a Celestron 9.25-inch telescope and want to keep it in top condition. Is it worth getting it professionally serviced?
BOB GOODENOUGH
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Collimating a Newtonian Scientifically: Incorporating the Cave and Laser Telescope Collimators
byPeter R. Clark-Fras