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sky watcher newtonian 750pds 150mm secondary mirror screws upgrade (Robert davidson) View |
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The Basic Telescope Types- OPT (OPT Telescopes) View |
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Telescope Secondary Mirror Install (Zachrey Helmberger) View |
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10 UPGRADES for a Newtonian Telescope (Robservatory ) View |
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Figuring Tips for a 5.5-inch Renegade Secondary Mirror (GordonWaite) View |
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How to strip and clean the optics of a SCT (Schmidt-Cassegrain Telescope) (Willie Koorts) View |
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Collimating your reflecting Telescope in just a few minutes (Astronomy and Nature TV) View |
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Attaching a telescope secondary mirror (geocarey) View |
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How to clean the secondary mirror on telescope (DIY at Home) View |
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How to change the secondary mirror on your telescope! (To one of the best mirrors out there) (Exo Photography) View |