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cosmic camper
member
Reged: 06/12/08
Posts: 22
Loc: Santa Cruz, CA
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Re: Mirror Source
06/20/08 11:49 AM
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All interesting ideas. But back to my original question - what is the minimum flatness in waves of light required for 20X80 binos? From all I have read, it is under 1 wave. But is it .25, .50, .75? And is there any affordable source (under $100) for a single unit of such mirror? Someone must know the answer, perhaps a formula, for the flatness question. 
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Paul,
the Cosmic Camper
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2005 Ford Econoline camper van
16" Astro Sky/Swayze truss tube dob
DGM 5.5" off-axis dob
Celestron Nexstar 5SE
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