Re: [ATM] holographic null test on round robin mirror C

[Jim Burrows <burrjaw@earthlink.net>]

At 2005-02-03 17:19 -0500, matt tudor wrote:

>With all the talk about the holographic null test, what about a more modern
>version of a Hartman test? All it takes is a mask in front of a ccd camera.
>A precision metal mask can be made for very little money. The rest is
>calibration and software.
>
>A Hartmann mask with a few hundred subapertures would be equivalent to an
>interferogram in the number of datapoints sampling .

Good arguments - that's why I did it (one-image Hartmann with a webcam, did 
pretty well on the Round Robin mirrors, at least better than Foucault on my 
10"f/2.6 RC cass primary):

         http://home.earthlink.net/~burrjaw/public/hart2d.zip 
(2004-04-24, Win32, 1.13 M)

         -- Jim Burrows
         -- mailto://burrjaw@earthlink.net
         -- http://home.earthlink.net/~burrjaw
         -- Seattle N47.4723 W122.3662 (WGS84) 

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