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Solar Filter For 4 Inch Reflector Telescope

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Posted by Rohan on March 14, 2006 17:41:05 UTC

I have recently begun stargazing and I know very little about telescopes in general. Firstly I would like to know what the meaning of designations such as f/60 and f/70 and how I can find this designation on my own telescope. I would also appreciate any advice anyone has on solar filters.

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