Hi there,

I am thinking of modeling a specific deformation on a mirror in my set up to help develope a pass/fail criteria. I have an interferogram (Zygo image) but I cannot make it into a Zernike model (it is rectangular), I will have to estimate and approximate the shape of the mirror by the data given. Attached an example.

I can convert the profile cross-section (marked with red arrow) from fringes to microns, that should not be a problem.

My question is: what non sequential object would you recommend that I’ll use for the mirror?

Thanks!