Re: [ATM] 8" F/4.2 progress

["Vladimir Galogaza" <vladimir.galogaza@zg.htnet.hr>]

Jason,

>So now I got this thing looking this good... I don't want to mess it up
>into a parabola... !!   But then I cannot use it as a scope!!  It's a
>catch 22...  :-)

It is certainly not a catch 22, thanks to work of Bill Kelley and Alan
Adler.
They proposed how to flex a spherical mirror into paraboloid
by mechanical means. Their work is described in Sky and
telescope magazine and there is also site about microflexing.
http://storm.prohosting.com/~lisaphot/gil/flex/index.htm

Some links
http://www.asahi-net.or.jp/~zs3t-tk/  includes Evaluation of Bill Kelley's
method.
http://skyandtelescope.com/resources/software/article_328_5.asp
a freeware program
Flex - How to stress a spheroidal mirror into a paraboloid

Best regards
Vladimir.



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