Re: ATM A PLOP result

[astro.electronic@t-online.de (Michael Koch)]

Hi Ken,

> I am redesigning my mirror cell and ran my numbers through PLOP.
> My Pyrex mirror has an OD of 12.6" and an average thickness of 1.9".  If
> I run a 4 point cell I get an error of 2.01375e-06 mm RMS and a support
> ring at .508337 X radius.  This is approximately 1/2 the max error of
> 4.20e-06 mm as per the web page user manual.  As a reality check, does
> this sound reasonable or have I missed something? 

I just verified your result. It's correct:
2 nm RMS surface = 4 nm RMS wavefront

Michael

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 ASTRO ELECTRONIC  Dipl.-Ing. Michael Koch
         www.astro-electronic.de
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