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Re: [ATM] COG of mirror - was astigmatism as seen via ronchi?

Hi Nils,

Wednesday, March 5, 2008, 1:40:36 PM, you wrote:

NOC> For Richard's test case, there seems to be still another half mm or so
NOC> difference, whereas Jim's expression agrees accurately.

Not sure what you are saying my test case differs with, but it agrees
almost exactly with Jims theory (as you would expect). We now know the
0.7 expression is an approximation, so it's got fairly close.


-- 

Best regards,
  Richard in the UK

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