Testing large plane mirrors with the Ritchey-Common test in two angular positions

Details Testing large plane mirrors with the Ritchey-Common test in two angular positions Testing large plane mirrors with the Ritchey-Common test in two angular positions

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3739..330d&link_type=abstract

Proc. SPIE Vol. 3739, p. 330-334, Optical Fabrication and Testing, Roland Geyl; Jonathan Maxwell; Eds.

Mathematics

Scientific paper

A mathematical algorithm is given and explained in detail that can be applied to a Ritchey-Common test in two angular positions to calculate deviations. The algorithm comprises a transformation form wavefront to mirror coordinates and a weighting function. Influences of the interferometer's misalignments are removed by fitting appropriate functions in the mirror plane. Functionality and accuracy have been checked by simulations and experiments. As an example one of the M3-mirrors of the Very Large Telescope fabricated by Carl Zeiss is shown.

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