Retrofitting a fine-pointing system to satellite optics

Details Retrofitting a fine-pointing system to satellite optics Retrofitting a fine-pointing system to satellite optics

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ams..symp...17w&link_type=abstract

Presented at the 29th Aerospace Mechanisms Symposium, Houston, TX, 17-19 May 1995

Astronomy and Astrophysics

Astronomy

Boresight Error, Retrofitting, Satellite-Borne Instruments, Spaceborne Astronomy, Spaceborne Telescopes, Coding, Computers, Correction, Distortion, Instrument Packages, Lubricants, Molybdenum Sulfides, Optical Equipment, Redundant Components

Scientific paper

This paper describes a system that was added to an existing satellite-borne telescope design for the purpose of compensating the boresight errors that had been observed in earlier flights of similar instruments. Those errors had been found to be caused by thermal distortion of the spaceframe. This retrofit design was subject to severe volume restrictions because it was fitted into an already tightly-packaged instrument envelope. It was found practical to improve the basic design by converting a redundant structure into a statically-determinate one. It was also possible to use portions of the mechanical actuation system to facilitate the position encoding needed for computer interfacing.

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