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Proceedings Paper

A Method Of Gravity Release Compensation In The Optical Alignment Of Orbiting Meteorological Sounding And Imaging Instruments
Author(s): James C. Wetzel
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Paper Abstract

This paper describes a method developed for precompensating the front-end (telescope) optical alignment of the Imager and Sounder radiometric instruments, which will be launched as components of the GOES I - M series of meteorological satellites. To satisfy the severe pointing accuracy requirements on these instruments, their alignments must be offset in the one - G field of the laboratory, in order that they will be correct in orbit. A method was developed to make the necessary alignment offset, using a counterweight mechanism; autocollimation returns frau reference mirrors on the instrument structure and supporting fixturing provided feedback for adjusting the counterweight mechanism. A series of experiments was performed to verify that these autocollimation return measurements were a good predictor of telescope line-of-sight changes; these experiments are described and their results summarized.

Paper Details

Date Published: 4 August 1988
PDF: 7 pages
Proc. SPIE 0941, Automated Testing of Electro-Optical Systems, (4 August 1988); doi: 10.1117/12.947177
Show Author Affiliations
James C. Wetzel, ITT Aerospace (United States)

Published in SPIE Proceedings Vol. 0941:
Automated Testing of Electro-Optical Systems
John Nestler; Philip I. Richardson, Editor(s)

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