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Proceedings Paper

Active optics theory: compensation of aberration using the single actuator principle
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Paper Abstract

Active Optics allows the possibility of using the generation of complex variable optical surfaces to keep the optical layout of future instruments relatively simple, something which could be of great interest to future telescopes such as E-Elt, Tmt. The aim of this article is to describe the development of the "single actuator - single mode" principle that makes it possible to generate single optical modes on a circular mirror using a single actuator at a specific location. We show the progress from design analysis (elasticity theory, finite element analysis etc) through to experimental validation for Variable Curvature Mirrors and Variable Astigmatism Mirrors. Current and future applications of these active mirrors are discussed in the framework of the EAGLE instrument for E-Elt and we present plans for further development of the technique.

Paper Details

Date Published: 23 July 2008
PDF: 10 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70184I (23 July 2008); doi: 10.1117/12.787937
Show Author Affiliations
Emmanuel Hugot, Univ. de Provence Aix-Marseille I, Lab. d’Astrophysique de Marseille, CNRS (France)
Marc Ferrari, Univ. de Provence Aix-Marseille I, Lab. d’Astrophysique de Marseille, CNRS (France)
Gérard R. Lemaître, Univ. de Provence Aix-Marseille I, Lab. d’Astrophysique de Marseille, CNRS (France)
Fabrice Madec, Univ. de Provence Aix-Marseille I, Lab. d’Astrophysique de Marseille, CNRS (France)


Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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