Centroiding: very sophisticated algorithm tuned on our lenslet arrays. It also akes into account for local non-uniform illumination
Combination of reference and test spots: our proprietary algorithm is very reliable and works in presence of very high aberrations
Choice among 4 set of polynomials to fit to data: Annular, Standard and Fringe Zernikes and Seidel polynomials. Annular Zernikes are required when analyzing astronomical telescopes
70 Zernike terms: low order and higher order aberration terms for Spherical aberrations, Astigmatism, Coma etc.
Wavefront reconstruction: independent from the Zernike aberrations, very sophisticated algorithm for integration from residuals