Re: [ATM] Re: FigureXP and Foucault test Analysis

["James Lerch" <jlerch1@tampabay.rr.com>]

Hi Jan

Welcome back from France, now that your back I've done a comparison of your data 
between SixTests, FigureXP,and Foucault Test Analysis.  Here's the results:

                      SixTests    FigureXP     FTA
PVWF           1/6.2         1/5.8         1/4.3
Surf RMS      14.8nm     15.9nm     20.3nm
Strehl              0.891       0.875        0.785
Best Fit conic  -1.053     -1.06         -1.015

Here's a link to a zip file containing the data files for all three programs:
http://lerch.no-ip.com/atm/Jan/Jan.zip

While all three give different results, SixTests and Figure agree within the 
margin of error of s(RMS) of 3.3nm, based on your 4 KE sets.  In addition the 
surface profiles for Sixtests and Figure are rather similar.

Here are some screen shots:

Sixtests surface profile:
http://lerch.no-ip.com/atm/Jan/Jan_6test_Surf.gif

FigureXP surface profile:
http://lerch.no-ip.com/atm/Jan/Jan_FigXP_Surface.gif

Foucault Test Analysis wavefront profile:
http://lerch.no-ip.com/atm/Jan/Jan_FTA_Surface.jpg

For all three programs, I used an effective mask radius entry, so that 
eliminates one variable..  Other than that I can not explain the discrepancies.

I also ran the Monte Carlo function on both FigureXP and FTA, here are the 
results:

FigureXP Monte Carlo Screen shot:
http://lerch.no-ip.com/atm/Jan/Jan_FigXP_MC.gif

FTA Monte Carlo Screen Shot:
http://lerch.no-ip.com/atm/Jan/Jan_FTA_MC.gif

I wish you were closer, it would be interesting to see what an interferometer 
had to say about the optic.

Take Care,
James Lerch
http://lerch.no-ip.com/atm (My telescope construction,testing, and coating site)

"Anything that can happen, will happen" -Stephen Pollock from:
"Particle Physics for Non-Physicists: A Tour of the Microcosmos"

" Press on: nothing in the world can take the place of perseverance.
Talent will not; nothing is more common than unsuccessful men with talent.
Genius will not; unrewarded genius is almost a proverb.
Education will not; the world is full of educated derelicts.
Persistence and determination alone are omnipotent. "
                                                           Calvin Coolidge 

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