NGST mirror system demonstrator from the University of Arizona

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

doi:10.1117/12.453635

27 December 2001 NGST mirror system demonstrator from the University of Arizona

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

Author Affiliations +

Proceedings Volume 4451, Optical Manufacturing and Testing IV; (2001) https://doi.org/10.1117/12.453635
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

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.

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James H. Burge, Scott T. DeRigne, James Roger P. Angel, Brian Cuerden, S. Clapp, G. Rivlis, Patrick M. Woida, Paul Gohman, Steve Bell, and R. Kingston "NGST mirror system demonstrator from the University of Arizona", Proc. SPIE 4451, Optical Manufacturing and Testing IV, (27 December 2001); https://doi.org/10.1117/12.453635

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