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Proceedings Paper

Ultra-Precise Star Tracking Using Charge Coupled Devices (CCDs)
Author(s): E. W. Dennison; R. H. Stanton
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Paper Abstract

Star trackers based on the use of charge-coupled device (CCD) imaging arrays have demonstrated substantial performance gains relative to more conventional designs. For many space applications, the most important gain is the accuracy improvement associated with a stable, precisely known, CCD geometry. This inherent accuracy can be fully exploited using star image centerfinding techniques to measure the image location to a small fraction of a CCD picture element. In this paper we present the results of an extensive series of laboratory tests aimed at exploring the accuracy limits of this technique. Simulated star images were moved over the CCD, permitting measurement of tracking errors as small as 1/1000 pixel. After tests on both frontside and backside illuminated (thinned) CCDs, we conclude that tracking accuracy better than 1/50 pixel can be achieved.

Paper Details

Date Published: 1 January 1980
PDF: 10 pages
Proc. SPIE 0252, Smart Sensors II, (1 January 1980); doi: 10.1117/12.959483
Show Author Affiliations
E. W. Dennison, California Institute of Technology (United States)
R. H. Stanton, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0252:
Smart Sensors II
David F. Barbe, Editor(s)

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