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Proceedings Paper

Lightweight SiC foamed mirrors for space applications
Author(s): Andrea Novi; Giuseppe Basile; Oberto Citterio; Mauro Ghigo; Aldo Caso; Gianluigi Cattaneo; G. Francesco Svelto
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Paper Abstract

By combining the excellent intrinsic thermo-mechanical properties of the silicon carbide (SiC) with a structural design based on a sandwich structure composed of two SiC face sheets deposited on a foam core of the same material, it is possible to manufacture very light and stiff mirrors for space applications. This paper presents some results of a technological development study, including the realization of a lightweight athermalized SiC telescope with a 310 mm diameter foamed-SiC primary mirror. An ion beam figuring equipment has been developed to improve the optical quality of the mirror.

Paper Details

Date Published: 5 November 2001
PDF: 7 pages
Proc. SPIE 4444, Optomechanical Design and Engineering 2001, (5 November 2001); doi: 10.1117/12.447323
Show Author Affiliations
Andrea Novi, Officine Galileo (Italy)
Giuseppe Basile, Officine Galileo (Italy)
Oberto Citterio, Osservatorio Astronomico di Brera (Italy)
Mauro Ghigo, Osservatorio Astronomico di Brera (Italy)
Aldo Caso, Bettini SpA (Italy)
Gianluigi Cattaneo, Bettini SpA (Italy)
G. Francesco Svelto, Agenzia Spaziale Italiana (Italy)

Published in SPIE Proceedings Vol. 4444:
Optomechanical Design and Engineering 2001
Alson E. Hatheway, Editor(s)

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