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Reference Element For Fizeau Interferometer

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Posted by Don Ware/">Don Ware on January 5, 1998 17:30:10 UTC

I'm assembling a Fizeau interferometer based on the article by Peter Ceravolo in S&T in 1994. Would like to find a source for the reference element. Preferably a 25mm f/3.5 with at least 1/10 wave figure. Peter sold a quantities of these but no longer makes them.

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