Re: ATM Strehl

["Richard F.L.R. Snashall" <rflrs@javanet.com>]

Nils Olof Carlin wrote:

>Frank Myosin:
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>>Can someone please direct me to references, or a website, that explains 
>>Strehl and how to do the test to get the numbers?
>>
>Some software, like Sixtests and Figure, calculates the Strehl ratio routinely 
>while calculating the error profile (as derived from Foucault or related 
>quantitative test).
>If you have the RMS error (and it is small), there are ways to calculate
>the Strehl ratio to useful precision (there is no way to go from P-V error to
>Strehl).
>
If you need a reference, Born and Wolf, chapter 9.1, equation 24.

                        Rick S.

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