Translator Disclaimer
27 July 2004 New Ball Aerospace star tracker achieves high tracking accuracy for a moving star field
Author Affiliations +
Star tracking at Ball Aerospace has reached a new level of performance with the development of the High Accuracy Star Tracker (HAST). This new tracker builds on the experience gained from the Chandra Aspect Camera which attained better than 0.2 arc-seconds on-orbit overall performance with a stationary star field. The HAST is optimized to achieve similar performance on stars moving between 0.07 and 1.0 degrees/second and can maintain track on stars moving 0 to 4 degrees/second. HAST is capable of tracking multiple stars, further enhancing the accuracy performance. This paper examines the principal error components that affect star tracking accuracy. We further examine the physical basis for three error sources: 1) boresight alignment bias, 2) transit dependent bias, and 3) random measurement. We develop the design trade space used to optimize tracker performance within these error constraints. Finally, we present the working specifications for HAST, describe the HAST implementation, and review the flight qualification test results.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dan L. Michaels and James F. Speed "New Ball Aerospace star tracker achieves high tracking accuracy for a moving star field", Proc. SPIE 5430, Acquisition, Tracking, and Pointing XVIII, (27 July 2004);


SED16 autonomous star tracker night sky testing
Proceedings of SPIE (November 20 2017)
Star trackers for spacecraft applications
Proceedings of SPIE (August 31 1990)
Bayesian closely spaced object resolution technique
Proceedings of SPIE (July 05 1994)
Analysis of the NEAR star tracker flight data
Proceedings of SPIE (October 27 1996)
RHESSI imager and aspect systems
Proceedings of SPIE (February 10 2003)

Back to Top