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Re: [ATM] ronchi accuracy




On Sat, 10 Dec 2005, Mel Bartels wrote:

> 4) A good mirror is fully polished out.


Hi guys!

I guess the conclusion of my mathematical tinkering has lead
me to the Ronchi test and generally not much else until
starlight strikes the surface. I simplify, I round off numbers
to values I can remember and maybe work in my head, etc. Mel did
not comment more on this point on polishing, but I have at times
wondered, with all this testing fussiness, does anyone else here
test for reflectivity of the final surface? I guess this is largely
directed to Mel since he is involved with teaching.

Dominic-Luc Webb

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