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Proceedings Paper

NGST mirror system demonstrator from the University of Arizona
Author(s): James H. Burge; Scott T. DeRigne; James Roger P. Angel; Brian Cuerden; S. Clapp; G. Rivlis; Patrick M. Woida; Paul Gohman; Steve Bell; R. Kingston
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Paper Abstract

Future space telescopes require primary mirrors that are much lighter than those currently being manufactured. They also must maintain optical tolerances while operating at cryogenic temperatures. We present a Mirror System Demonstrator for the Next Generation Space Telescope (NGST) that uses a thin glass facesheet with active control to achieve low mass and high surface quality. A 2-mm thick glass facesheet is controlled by miniature actuators and held together by a rigid carbon fiber frame. The 2-m diameter mirror system weighs only 13 kg/m2, including the glass, supports, actuators, support structure, and cabling. We present the status of the development and testing of this revolutionary mirror.

Paper Details

Date Published: 27 December 2001
PDF: 12 pages
Proc. SPIE 4451, Optical Manufacturing and Testing IV, (27 December 2001); doi: 10.1117/12.453635
Show Author Affiliations
James H. Burge, Steward Observatory/Univ. of Arizona (United States)
Scott T. DeRigne, Steward Observatory/Univ. of Arizona (United States)
James Roger P. Angel, Steward Observatory/Univ. of Arizona (United States)
Brian Cuerden, Steward Observatory/Univ. of Arizona (United States)
S. Clapp, Steward Observatory/Univ. of Arizona (United States)
G. Rivlis, Steward Observatory/Univ. of Arizona (United States)
Patrick M. Woida, Steward Observatory/Univ. of Arizona (United States)
Paul Gohman, Optical Sciences Ctr./Univ. of Arizona (United States)
Steve Bell, Lunar and Planetary Lab./Univ. of Arizona (United States)
R. Kingston, Lunar and Planetary Lab./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 4451:
Optical Manufacturing and Testing IV
H. Philip Stahl, Editor(s)

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