ATM BKD Hershelian

["John Sherman" <shermj@netzero.net>]

>As to stressed mirror stuff, you might also want to check out one of the
>back issues of Amateur Telescope Making Journal for the issue about the guy
>stressing a mirror to make an off-axis parabola complete with all of the
>calculation stuff necessary to do the job.  That was a great issue!  If you
>aren't a ATMJ subscriber, you really should be one if you are a telescope
>maker.


Bob,

Thank you for the input. Yes, I have all the issues of ATMJ. I believe
you're talking of issue 13, where the glass is stressed before polishing to
a sphere. After polishing it assumes the section of paraboloid. As a first
project, this was WAY beyond me. Also, I did my experiment well before this
issue came out, so I couldn't take advantage of it's knowledge. That was
certainly a tremendous project Gary did!

John


P.S. When I wrote my email the subject was: BKD Hershelian. I don't know how
that subject line with the date came about...








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