Computer program for the analysis of interferometric test data

The over-all design and capabilities of several proprietary computer programs to reduce and analyze various types of interferometric data are described. The following problems and methods of solution are discussed in greater detail: scaling and mapping errors; generation of artificial interferograms and holograms for testing without null lenses; combination of overlapping partial-aperture interferograms; the Ritchey-Common test for flat mirrors; and fitting of interferometric data with orthogonal polynomials.