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Proceedings Paper

Laboratory demonstration of curvature method for segmented telescopes
Author(s): Fernando Garfias; Salvador Cuevas; Valeri G. Orlov; Leonardo J. Sanchez
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Paper 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.

Paper Details

Date Published: 20 July 2000
PDF: 7 pages
Proc. SPIE 4003, Optical Design, Materials, Fabrication, and Maintenance, (20 July 2000); doi: 10.1117/12.391535
Show Author Affiliations
Fernando Garfias, Instituto de Astronomia/Univ. Nacional Autonoma de Mexico (Mexico)
Salvador Cuevas, Instituto de Astronomia/Univ. Nacional Autonoma de Mexico (Mexico)
Valeri G. Orlov, Instituto de Astronomia/Univ. Nacional Autonoma de Mexico (Mexico)
Leonardo J. Sanchez, Instituto de Astronomia/Univ. Nacional Autonoma de Mexico (Mexico)


Published in SPIE Proceedings Vol. 4003:
Optical Design, Materials, Fabrication, and Maintenance
Philippe Dierickx, Editor(s)

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