To: "James Lerch" ,"ATM
List" ,
 
From: Mark Suchting 
Reply-To: Mark Suchting 


At 12:11 PM 17/02/2003 -0500, James Lerch wrote:

>#1 Does anyone actually "use" any of the following in Figure45
>     A) Transverse error analysis graph
>     B) Spot Diffraction Analysis graph
>     C) Spot Visualization Display


James

I think the Transverse Error Analysis is well worth keeping because it is
so instructive in giving a real handle on how different kinds of  errors ,
throw light more or less out of the region of formation of the Airy Disc,
due to their slopes and relative width. `Focussing' completely on a P-V
output  is encouraging a simplistic outlook. Remember that all 1/4 wave
mirrors are not equal.  Sure the `Strehl ratio' reflects these differences
between `equal' mirrors, but  I think studying the behaviour of the the
transverse graph combines with the wavefront profile can be far more
instructive.

~Mark

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