Thread: New AP 17" astrograph
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Old 04-08-2016, 06:27 PM
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Slawomir (Suavi)
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Quote:
Originally Posted by Shiraz View Post
looks great, but what did they clean the mirror with - an old sock or something?
Unusual reflections are caused by a new revolutionary optical coating - C₁₇H₃₅COONa.
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