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Proceedings Paper

Fabrication and testing of very lightweight composite mirrors
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Paper Abstract

We report progress in the development of very lightweight uv-vis-ir mirrors for space- and ground-based applications. The mirrors are made by replication using spaceflight qualified graphite cyanate ester composite materials. We have developed a process that successfully overcomes the problems of fiber print-through, vacuum instability, and appearance of bond lines on the surface. These problems have thwarted previous attempts in the development of composite optics. We describe our process and present some recent results. These include the fabrication of mirrors with highly smooth surfaces, low mid-frequency ripple, and areal density 2 kg/m2 at 60 cm aperture. We also present data on bond lines and active optical figure control.

Paper Details

Date Published: 28 August 1998
PDF: 8 pages
Proc. SPIE 3356, Space Telescopes and Instruments V, (28 August 1998); doi: 10.1117/12.324451
Show Author Affiliations
Peter C. Chen, Composite Mirror Applications, Inc. and Catholic Univ. of America/NASA Goddard Space Fligh (United States)
Robert C. Romeo, Catholic Univ. of America/NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 3356:
Space Telescopes and Instruments V
Pierre Y. Bely; James B. Breckinridge, Editor(s)

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