Ultra-lightweight, actively controlled mirrors for space

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Advanced technology mirrors for large space telescopes are being developed that use thin facesheets controlled by actuators. This concept was proven with a 50 cm prototype and is now being implemented for a 2 m cryogenic mirror that weighs only 40 kg. The reflective surface is provided by a glass facesheet, typically 2 mm thick, which is attached to a stiff lightweight support structure through a set of screw-type actuators. This system allows periodic adjustments with the actuators to maintain the surface figure as measured from a wavefront sensor. The optical surface accuracy and stability are maintained by the active system, which can be made using lightweight carbon fiber laminates that economically provide stiffness.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages84-85
Number of pages2
Volume3749
Publication statusPublished - 1999
EventProceedings of the 1999 18th Congress of the International Commission for Optics (ICO XVIII): Optics for the Next Millennium - San Francisco, CA, USA
Duration: Aug 2 1999Aug 6 1999

Other

OtherProceedings of the 1999 18th Congress of the International Commission for Optics (ICO XVIII): Optics for the Next Millennium
CitySan Francisco, CA, USA
Period8/2/998/6/99

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Burge, J. H. (1999). Ultra-lightweight, actively controlled mirrors for space. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3749, pp. 84-85). Society of Photo-Optical Instrumentation Engineers.