By using the scatterplate interferometer in a noncommon path mode, it becomes possible to cancel test aberration. The techniques for fabricating such a scatterplate are very similar to those found in holographic interferometry. A null test of a 20-cm diam, f/3 parabola is described.
© 1980 Optical Society of America
Lawrence F. Rubin, "Null testing in a modified scatterplate interferometer," Appl. Opt. 19, 1634-1638 (1980)