Computer Science – Performance
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1111...21b&link_type=abstract
IN: Acquisition, tracking, and pointing III; Proceedings of the Meeting, Orlando, FL, Mar. 27-29, 1989 (A90-39001 17-17). Bellin
Computer Science
Performance
Automatic Control, Charge Coupled Devices, Star Trackers, Breadboard Models, Data Acquisition, Performance Tests, Reference Stars, Tracking (Position)
Scientific paper
The TPD Off-Axis Star-Tracker aims at achieving a high accuracy of 1.5 arcsec in a 5.4 x 8.1 deg field of view, combined with random pointing capability. This requires a guide-star limit of m(silicon) = 6.5, giving a 99 percent probability of finding at least two guide-stars in the field of view, thus permitting three-axis attitude reconstitution. To enhance the usefulness of the sensor, three modes of operation are provided, enabling respectively a survey of the starfield, guide-star acquisition and fine tracking. The detector is cooled thermo-electrically. A functionally representative breadboard model was built and subjected to performance tests. Test results show that the measured performances are not far from the design goals.
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