Re: [ATM] data and musings on thin mirror

["Jerry" <wa4guu@verizon.net>]

By the Ronchi I had estimated the correction center to edge would correspond
to Foucault knife movement of .075 inch with a fixed source tester. That is
about 10 percent of the desired .579 inch.

By the simulated Ronchi's I estimate the knife movement would be about .060
inch. That is not quite 8 precent.

Jerry 

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf Of
Stephen Koehler



 Theoretically, a lot of the mirror aberratons should be discernable in
the Ronchi sequence--even the primary astigmatism shows up pretty well
as a leaning of the lines through focus.  I'm curious whether anyone
can read the amount of spherical aberration from these images.  For
comparison, here's a simulation of a perfect mirror:

http://www.visi.com/~mkoehler/eason_davis_misc/davis_ronchi_ref.png

--
Steve Koehler
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