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Surface Contour Map

This map shows high and low areas on 20" f 8 Ritchey-Chretien test mirror with a total wavefront deviation of .18 waves peak-to-valley and .031 waves r.m.s.

Fringe Analysis Sheet

This document is a compilation of data averaged from each interferogram. A minimum of three interferograms is supplied with each optical system.


A CCD camera recording of an optical interference pattern caused from laser light beam shearing between the incoming and outgoing beam of the interferometer. The straighter the lines, the better the optics.