SiC-foamed mirror for telescope operating in space or on ground

Oberto Citterio; Giancarlo Parodi

doi:10.1117/12.269055

21 March 1997 SiC-foamed mirror for telescope operating in space or on ground

Oberto Citterio, Giancarlo Parodi

Proceedings Volume 2871, Optical Telescopes of Today and Tomorrow; (1997) https://doi.org/10.1117/12.269055
Event: Optical Telescopes of Today and Tomorrow, 1996, Landskrona/Hven, Sweden

Abstract

By combining the excellent intrinsic thermo-mechanical properties of the SiC (silicon carbide) with a structural design based on a sandwich structure composed of two SiC face sheets CVD (chemical vapor deposition) deposited on a foam core of the same material, it is possible to manufacture very light and stiff primary mirrors for telescopes to be operated in space or on ground. The paper presents an analysis of the mechanical properties of this structure, it proposes a preliminary design of a segmented mirror and support pattern for space or for on ground telescopes, and it points out the important saving in weight which is possible with respect to other approaches used to manufacture lightweight mirrors.

Citation Download Citation

Oberto Citterio and Giancarlo Parodi "SiC-foamed mirror for telescope operating in space or on ground", Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); https://doi.org/10.1117/12.269055

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