Glass mirrors for space telescopes

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The Hubble Space Telescope uses a primary mirror of area 5 m2. We consider the mirrors needed for two possible future telescopes, of 50 m2 and 500 m2 in area. The former would be an 8m diameter monolithic mirror of zero expansion glass, and would be diffraction limited at optical wavelengths (0.015 arcseconds images). The 500 m2 mirror, the area proposed for the Large Deployable Reflector, would be diffraction limited down to 30 wavelength (0.3 arcsecond images). Both types of mirror could be of honeycomb sandwich construction made by a new air inflation method. The larger reflector would consist of ultra lightweight glass panels.

Original languageEnglish (US)
Pages (from-to)32-34
Number of pages3
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Oct 22 1985

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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