another case of filter coating degradation / oxidation

Use this section to discuss "standard" Baader/Coronado/ Lunt SolarView/ Daystar, etc… filters, cameras and scopes. No mods, just questions/ answers and reviews.
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krakatoa1883
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Re: another case of filter coating degradation / oxidation

Post by krakatoa1883 »

How old are these filters, Apollo ? Were they undefective when new ?


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