How to clean a telescope mirror - I am testing a new method!
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How To Remove a Telescope Mirror
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How to change the secondary mirror on your telescope! (To one of the best mirrors out there)
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snorricam 1
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How To Clean A Telescope Mirror: The Step By Step Guide [ 8" Reflector Telescope ] by Reflactor
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How to clean your telescope's mirrors [8" Newtonian Reflector]
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Grinding a 25-Inch F3 Telescope Mirror: Thinning and Flattening the Back
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Wie reinigt man den Spiegel eines Teleskops? | How-to
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