ATM Re: 4.25" Wing-nut idea...

[Brand <huntb@ucs.orst.edu>]

> I`m going to grind this to an F5 and finish it spherical. After coating 
> the back will have a fine threaded machine screw epoxied to it...in the 
> center. The mirror mount will be a ring of ?felt ?carpet to support the 
> outer 1/2, and the screw will go through a circular piece of plywood, 
> with a nice big wing nut on the other side. The parabola will be tuned 
> in at each use, kinda like a star test but the figure will be tunable.
> Well, that`s my latest mad scheme, all comments appreciated. Idea came 
> from an old S&T or Astronomy, long before the astronomy bug bit me for 

So, you're putting stress on the sherical mirror by cranking down the wing 
nut? Wouldn't it take a lot of cranking down for an F5? Has anybody else 
done this successfully (more than once ;)??

Rodger, if you get this to work, please let me know. Then I'll copy you. :-)

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Brand Hunt                 Email: huntb@ucs.orst.edu
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