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

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aeme.symp..175w&link_type=abstract

In NASA. Johnson Space Center, The 29th Aerospace Mechanisms Symposium p 175-182 (SEE N95-27260 09-15)

Physics

Optics

Optics, Redundant Components, Retrofitting, Satellite-Borne Instruments, Telescopes, Boresight Error, Distortion, Spacecraft Structures

Scientific paper

This paper describes a system 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 subjected 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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