Light weight aluminum optics

Details Light weight aluminum optics Light weight aluminum optics

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.239..173c&link_type=abstract

In ESA Proceedings of ESA Workshop on a Cosmic X-Ray Spectroscopy Mission p 173-175 (SEE N86-22461 12-89)

Astronomy and Astrophysics

Astronomy

Aluminum, Manufacturing, Mirrors, Spaceborne Astronomy, Spaceborne Telescopes, X Ray Telescopes, Low Temperature Brazing, Metal Foams, Optical Equipment, Weight Reduction

Scientific paper

Light weight mirror blanks were fabricated by dip-brazing a core of low mass aluminum foam material to thin face sheets of solid aluminum. The blanks weigh 40% of an equivalent size solid mirror and were diamond turned to provide reflective surfaces. Optical interferometry was used to assess their dimensional stability over 7 months. No changes in flatness are observed (to the sensitivity of the measurements of a half wavelength of red light).

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