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Ronchi Test

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Posted by Gerry Brummund/">Gerry Brummund on August 8, 1999 05:25:09 UTC

Hi, my first mirror has turned out to 1/18.9 at zone 3 according to tex.exe but under a ronchi test OUTSIDE of focus, the edges turn out at the very top. Is this what i think it means that I have a TURNED UP edge. I dont want to get it wrong and apply the wrong action and screw up what is now a very fine figure.

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