NGST mirror system demonstrator from the University of Arizona

J. Burge, S. DeRigne, R. Angel, B. Cuerden, S. Clapp, G. Rivlis, P. Woida, P. Gohman, S. Bell, R. Kingston

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)27-38
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2001
EventOptical Manufacturing and Testing IV - San Diego, CA, United States
Duration: Jul 31 2001Aug 2 2001


  • Gossamer optics
  • Optical fabrication
  • Space optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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