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RE: RE: Overshot Radius Of Curvature

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Posted by Walt Hamler on May 19, 2000 20:03:13 UTC

Thanks guys! Now you tell me!! Ha! Actually I finished fine grinding this am, made my lap, an have started polishing. On the Foucalt tester the radius is now 126, so fl is 63", 9 whole inches shorter than I had in mind. Oh well, next time!! I had wanted it long to allow the figure to remain spherical, bu will probably go ahead and leave it spherical until I can star test, see if I like, and go from there. This mirror will end up in a small dob that I plan on giving to a friend anyway, so I`m sorta experimenting. Bob, I`ll keep those figures in the notes of my book for future reference. I too didn`t think the 120 would be so quick working.
Walt

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