[Chaos-l] lunar filter

[Michael Hrivnak]

I would like to get a lunar filter for use with my 8" dob.  Should I get one 
that passes 13% of light, 25%, or one of these variable ones that are 
adjustable between about 1-40%?  Or maybe I should get the 13 and 25?

I'm would appreciate any insight on how the adjustable ones work.

Thanks,
Michael
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