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Flexing A Sphere Into A Parabola

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Posted by Pete on September 21, 2000 22:36:34 UTC

The November issue of Sky and Telescope has an article where spherical telescope mirrors are flexed into a parabola. The method is more complex than simply gluing a bolt to the back of the mirror and applying tension.

If you have read the article do you have any thoughts on this approach? Also how does such a mirror get realuminized in a chamber with a ~3" bolt sticking out the back of it? I guess a special holder would need to be built.

The method sounds quite appealing since polishing a mirror into a sphere is easy.

Follow Ups:

RE: Flexing a sphere into a parabola - bobmay - September 22, 2000 - 16:45 UTC
RE: Flexing a sphere into a parabola - crockett - September 22, 2000 - 17:15 UTC
- The S&T article - crockett - October 2, 2000 - 17:35 UTC
  - RE: The S&T article - Pete - October 3, 2000 - 10:48 UTC
    - RE: RE: The S&T article - crockett - October 5, 2000 - 03:06 UTC
- ABSOLUTELY NOT - chriske - May 30, 2004 - 10:19 UTC
RE: Flexing a sphere into a parabola - Pete - September 27, 2000 - 00:42 UTC
- RE: RE: Flexing a sphere into a parabola - crockett - September 27, 2000 - 18:38 UTC
RE: Flexing a sphere into a parabola - Marc - October 5, 2000 - 16:55 UTC

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