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Proceedings Paper

Optical design and active optics for next generation space telescopes
Author(s): V. Costes; D. Laubier; P. Darre; L. Perret
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Paper Abstract

High resolution observing systems need bigger and bigger telescopes. The design of such telescopes is a key element for the satellite design. In order to improve the imaging resolution with minimum impact on the satellite, a big step must be made to improve the compactness of the telescope. This paper describes the comparative study of several compact optical designs. Different apertures, from F/5 to F/20, and different concepts, TMA (Three Mirror Anastigmat), Ritchey-Chrétien concept and Korsch concept have been studied. We will point out advantages and disadvantages of each design. We will show how compact a high resolution telescope can be. A diffraction limited telescope can be less than ten times shorter than its focal length. A constraining consequence of this compactness is the huge increase of the sensitivity factors. The impacts on the optics and on the opto-mechanical tolerances have been analysed. The need to implement active optics raises. A first active optics experiment is presented

Paper Details

Date Published: 26 September 2013
PDF: 7 pages
Proc. SPIE 8860, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI, 88600B (26 September 2013); doi: 10.1117/12.2023850
Show Author Affiliations
V. Costes, Ctr. National d'Études Spatiales (France)
D. Laubier, Ctr. National d'Études Spatiales (France)
P. Darre, Ctr. National d'Études Spatiales (France)
L. Perret, Ctr. National d'Études Spatiales (France)

Published in SPIE Proceedings Vol. 8860:
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VI
Howard A. MacEwen; James B. Breckinridge, Editor(s)

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