Laboratory demonstration of curvature method for segmented telescopes

Fernando Garfias; Salvador Cuevas; Valeri G. Orlov; Leonardo J. Sanchez

doi:10.1117/12.391535

20 July 2000 Laboratory demonstration of curvature method for segmented telescopes

Fernando Garfias, Salvador Cuevas, Valeri G. Orlov, Leonardo J. Sanchez

Proceedings Volume 4003, Optical Design, Materials, Fabrication, and Maintenance; (2000) https://doi.org/10.1117/12.391535
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

We have obtained the curvature signal from defocused images before and after the pupil image for a simplified segmented mirror model. We used white light interferometry in order to calibrate the relative piston difference between the segments. The first results of applying the Curvature Sensing method to measure this relative piston difference are presented.

Citation Download Citation

Fernando Garfias, Salvador Cuevas, Valeri G. Orlov, and Leonardo J. Sanchez "Laboratory demonstration of curvature method for segmented telescopes", Proc. SPIE 4003, Optical Design, Materials, Fabrication, and Maintenance, (20 July 2000); https://doi.org/10.1117/12.391535

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