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28 July 2014Adapting large lightweight primary mirror to space active optics capabilities
The next generation of space telescope will use large primary mirrors to achieve high angular resolution. Due
to weight constrain, these large mirrors will have a very low mass per unit area. This ultra-light-weighting
leads to deformations of the primary mirror optical surface due to gravity load difference between ground and
space. Active Optics systems then become essential to maintain the quality of the output wavefront. The
supporting structures and surface quality specifications of the mirror must be optimized regarding the active
optics capabilities. The case of a two meters lightweight primary mirror will be presented.
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C. Escolle, E. Hugot, T. Fusco, M. Ferrari, V. Michau, T. Bret-Dibat, "Adapting large lightweight primary mirror to space active optics capabilities," Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 915128 (28 July 2014); https://doi.org/10.1117/12.2055782