Quote:
Originally Posted by Peter Ward
That said, for anyone who have not used ultra-narrow band filters, there is a a chalk and cheeze difference between 3nm and 10nm filters, regardless of f-ratio. (AstroDon's web site has some nice examples)
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I think Ken Crawford did
this one which is a bit of an eye opener.
Out of my price range, we only got $28 instead of 28million out of lotto last night
