Glass Mirrors For Space Telescopes

J.R.P. Angel

doi:10.1117/12.948155

22 October 1985 Glass Mirrors For Space Telescopes

J.R.P. Angel

Proceedings Volume 0542, Optical Fabrication & Testing Workshop; (1985) https://doi.org/10.1117/12.948155
Event: 1985 Albuquerque Conferences on Optics, 1985, Albuquerque, United States

Abstract

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 30μ 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.

Citation Download Citation

J.R.P. Angel "Glass Mirrors For Space Telescopes", Proc. SPIE 0542, Optical Fabrication & Testing Workshop, (22 October 1985); https://doi.org/10.1117/12.948155

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