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Title:
A Low-Cost Star Tracker for Sounding Rockets and Class D Satellites
Authors:
Percival, Jeffrey W.; Jaehnig, K. P.; Nordsieck, K. H.
Affiliation:
AA(Univ. of Wisconsin), AB(Univ. of Wisconsin), AC(Univ. of Wisconsin)
Publication:
American Astronomical Society, AAS Meeting #211, #135.22; Bulletin of the American Astronomical Society, Vol. 39, p.976
Publication Date:
12/2007
Origin:
AAS
Bibliographic Code:
2007AAS...21113522P

Abstract

The University of Wisconsin's Space Astronomy Laboratory has designed and built a Star Tracker suitable for use on sounding rockets and class D satellites. This device brings together autonomous attitude determination ("Lost in Space" mode), multi-star tracking, and a novel form of Progressive Image Transmission, which allows the device to be used as an ultra-low bandwidth imager.

The Star Tracker 5000 reached operational status in a suborbital sounding rocket flight in August 2007. The ST5000 determined the rocket's inertial (FK5) attitude using its autonomous attitude determination capability, and then provided continuous sub-arcsecond tracking for the full 360-second on-target portion of the flight. The ST5000 RMS tracking error was 0.54 arc-seconds in Yaw and Pitch, and 17 arc-seconds in Roll. The vehicle RMS jitter was 0.5 arc-seconds in Yaw and Pitch, and 10 arc-seconds in Roll.

The ST5000 was funded by NASA grant NAG5-8588.

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