Design, manufacture and testing of a medium accuracy star tracker

Details Design, manufacture and testing of a medium accuracy star tracker Design, manufacture and testing of a medium accuracy star tracker

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8531488b&link_type=abstract

Design, manufacture and testing of a medium accuracy star tracker ESA

Astronomy and Astrophysics

Astronomy

Ccd Star Tracker, Flight Tests, Product Development, Breadboard Models, Centroids, Gamma Ray Astronomy, Noise Reduction, Sensitivity, Signal To Noise Ratios, Target Acquisition

Scientific paper

The development, manufacturing, and testing of a CCD bright star sensor breadboard model are summarized. Adaptation potential of the model for faint star tracking; and applicability of photon event centroiding techniques to point source centroiding are discussed. A model was flown on a balloon to detect gamma ray sources. Equipment failures prevented utilization of ground recordings, but it is probable that the payload structure reached 60 C instead of the 10 to 15 C specified, allowing the sensor to see bright stars only. Postflight tests confirm that sensor performance meets design requirements: + 6 visual magnitude sensitivity; 28 sec target acquisition time (max); 25 updates/sec in tracking mode; 1.5 arcmin resolution; and 36 arcsec noise equivalent angle.

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