Optical contacting for gravity probe star tracker

Details Optical contacting for gravity probe star tracker Optical contacting for gravity probe star tracker

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ocgp.book.....w&link_type=abstract

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Computer Science

Adhesion, Bonding, Gravity Probe B, Silica Glass, Spaceborne Telescopes, Spacecraft Equipment, Star Trackers, Cleaning, Compression Tests, Cryogenic Temperature, Fabrication, Surface Roughness, Tensile Strength, Van Der Waals Forces, Vibration Tests

Scientific paper

A star-tracker telescope, constructed entirely of fused silica elements optically contacted together, has been proposed to provide submilliarc-second pointing accuracy for Gravity Probe. A bibliography and discussion on optical contacting (the bonding of very flat, highly polished surfaces without the use of adhesives) are presented. Then results from preliminary experiments on the strength of optical contacts including a tensile strength test in liquid helium are discussed. Suggestions are made for further study to verify an optical contacting method for the Gravity Probe star-tracker telescope.

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