ATM Focault Tester

[cnebark@ix.netcom.com (Chris & Elizabeth Barker )]

Hi,

        I am about to start grinding my new mirror and I would like to
build a tester by the time I'm ready to start figuring. 

    Does any one have a picture or good diagram of this slitless
light source for a focault tester? Also I wouldn't mind looking at any
complete plans for a good tester.

    I've seen Texereau's, a University Optics kit, and a friend of 
mine's. But I would like to incorporate any new ideas I can find.


                                Thanks,
                                Chris Barker
                                cnebark@ix.netcom.com