[ATM] long analysis of my Torus mirror

[koehler at securecomputing.com (Stephen C. Koehler)]

I have posted links to this on the obsession and torus Yahoo groups, but 
Mike Peck suggested I post it here, too.  This 30+ page report is an 
exercise in seeing how much information I can squeeze out of different test
methods.  I think the following may be of particular interest to the ATM
list:

    - An interferometric comparison of the effect of a Spectrum standard
      Al coating on my mirror.

    - A description of how Dale Eason's Robo-Foucault works, and the 
      amazingly close correspondence to interferometry on my mirror.

    - How I went about comparing 2D interferometry to 1D tests.  In 
      particular, I found it very useful to strip interferometry down
      to just the symmetric Zernike terms.

    - How much surface detail can be gleaned if you have enough
      interferograms to work with.

    - How much difficulty I have had in getting repeatable Foucault results
      on my f/4.5 mirror, and how far off from the other tests my
      inadequate results are.  (Other tests all point to my Foucault 
      results as the ones in error, not interferometry.)

Here's a pointer:

    http://www.visi.com/~mkoehler/18-64/analysis.pdf

-- 
Steve Koehler
koehler@securecomputing.com