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Re: [ATM] 'Commercial' annealed, rather than 'fine' annealed
On Saturday 24 April 2004 05:49 pm, Mark Cowan wrote:
> This is why inspection is vital! You could get large
> sheets of Polaroid from the Edmund's surplus outlet...
The only thing missing from this equation is how to test. Yes, a "cross" is
bad, but how bad? How do you use this test to quantify the strain levels
enough to say "this won't do for a 1/10 wave mirror, but will do for a 1/4
wave mirror"?
--
Michael Lindner
http://www.starastronomy.org *** http://home.att.net/~mikel
http://www.atmsite.org *** http://www.atmlist.net
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