Star tracker stellar compass for the Clementine mission
- and others
The Clementine mission provided the first ever complete, systematic surface mapping of the moon from the ultra-violet to the near-infrared regions. More than 1.7 million images of the moon, earth and space were returned from this mission. Two star tracker stellar compasses (star tracker camera + stellar compass software) were included on the spacecraft, serving a primary function of providing angle updates to the guidance and navigation system. These cameras served a secondary function by providing a wide field of view imaging capability for lunar horizon glow and other dark-side imaging data. This 290 g camera using a 576 x 384 FPA and a 17 mm entrance pupil, detected and centroided stars as dim and dimmer than 4.5 m{sub v}, providing rms pointing accuracy of better than 100 {micro}rad pitch and yaw and 450 {micro}rad roll. A description of this light-weight, low power star tracker camera along with a summary of lessons learned is presented. Design goals and preliminary on-orbit performance estimates are addressed in terms of meeting the mission`s primary objective for flight qualifying the sensors for future Department of Defense flights.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 86977
- Report Number(s):
- UCRL-JC--120867; CONF-950472--9; ON: DE95014384
- Country of Publication:
- United States
- Language:
- English
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Stellar compass for the Clementine Mission
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Related Subjects
INCLUDING NUCLEAR AND PARTICLE DETECTORS
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
BALLISTIC MISSILE DEFENSE
CALIBRATION
CAMERAS
COMPUTERIZED CONTROL SYSTEMS
DESIGN
ELECTRONIC GUIDANCE
FLIGHT TESTING
IMAGES
MOON
NAVIGATION
NAVIGATIONAL INSTRUMENTS
OPERATION
PERFORMANCE
REMOTE SENSING