>> (hacked Mel's Ronchi program)
> It looks like it does *something* but I need some way to calibrate the
> results against a known mirror or program. Does anyone have some code
> that does this, or have a mirror they can check it against?
> Any ideas?
How 'bout inputing the mirror with _known_ spherical abberation ? Use 100% parabola, (that of course should come out with straight lines), undercorrected mirror with say 1/2 wave spherical abberation (examples of that should be in Suiter's book), or just plain spherical mirror !
Bratislav