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Proceedings Paper

Testing large plane mirrors with the Ritchey-Common test in two angular positions
Author(s): Bernd Doerband; Stefan Schulte; Frank Schillke; Wolfgang Wiedmann
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Paper Abstract

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.

Paper Details

Date Published: 6 September 1999
PDF: 5 pages
Proc. SPIE 3739, Optical Fabrication and Testing, (6 September 1999); doi: 10.1117/12.360162
Show Author Affiliations
Bernd Doerband, Carl Zeiss (Germany)
Stefan Schulte, Carl Zeiss (Germany)
Frank Schillke, Carl Zeiss (Germany)
Wolfgang Wiedmann, Carl Zeiss (Germany)

Published in SPIE Proceedings Vol. 3739:
Optical Fabrication and Testing
Roland Geyl; Jonathan Maxwell, Editor(s)

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