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Proceedings Paper

Alignment Of Earth-Scanning Mapper Telescopes And Test Collimators Using Computerized Signal Histogram Printouts
Author(s): P. E. Thurlow; J. B. Young
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Paper Abstract

Various phases of ground testing of orbiting, object-scanning mapper telescopes require a high degree of alignment accuracy between the telescope under test and a bench collimator which simulates an earth scene. Alignments must be measured under transient conditions, during an interval in which the scanned ground image passes across the telescope's focal plane array (FPA). Alignment accuracies at microradian levels have been obtained over several rotational degrees of freedom by printing out patterns of detector signal versus time obtained from selected detectors as the scene image passes across the FPA. Although this technique was developed specifically for testing the Thematic Mapper (TM), it may be found useful in aligning and testing other kinds of scanning telescopes.

Paper Details

Date Published: 13 August 1984
PDF: 4 pages
Proc. SPIE 0483, Optical Alignment II, (13 August 1984); doi: 10.1117/12.943126
Show Author Affiliations
P. E. Thurlow, Santa Barbara Research Center (United States)
J. B. Young, Santa Barbara Research Center (United States)

Published in SPIE Proceedings Vol. 0483:
Optical Alignment II
Mitchell C. Ruda, Editor(s)

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