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worried - pin holes in baader solar filter...
A few days ago I picked up a solar filter from york optical for my C8. Ive used it a few times, but I am a bit nervous I must admit - There are a few faint pin holes here and there. Should I stop using it and ask for a refund, or is this perfectly ok? So far I am not blind, but I am worried that there might be some cumulative effect for long term observation....
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