Space Active Optics: toward optimized correcting mirrors for future large spaceborne observatories

被引：0

作者：

Laslandes, Marie ^{[1
]}

Hugot, Emmanuel ^{[1
]}

Ferrari, Marc ^{[1
]}

Lemaitre, Gerard ^{[1
]}

Liotard, Arnaud ^{[2
]}

机构：

[1] CNRS, 38 Rue F Joliot Curie, F-13388 Marseille 13, France

[2] Thales Alenia Space, F-06156 Cannes La Bocca, France

来源：

OPTICAL DESIGN AND ENGINEERING IV | 2011年 / 8167卷

关键词：

Active Optics; Deformable Mirrors; Space Telescopes; Aberrations Correction; Elasticity; SYSTEM;

D O I：

10.1117/12.896505

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Wave-front correction in optical instruments is often needed, either to compensate Optical Path Differences, off-axis aberrations or mirrors deformations. Active optics techniques are developed to allow efficient corrections with deformable mirrors. In this paper, we will present the conception of particular deformation systems which could be used in space telescopes and instruments in order to improve their performances while allowing relaxing specifications on the global system stability. A first section will be dedicated to the design and performance analysis of an active mirror specifically designed to compensate for aberrations that might appear in future 3m-class space telescopes, due to lightweight primary mirrors, thermal variations or weightless conditions. A second section will be dedicated to a brand new design of active mirror, able to compensate for given combinations of aberrations with a single actuator. If the aberrations to be corrected in an instrument and their evolutions are known in advance, an optimal system geometry can be determined thanks to the elasticity theory and Finite Element Analysis.

引用

页数：9

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