A radiation-hardened star scanner for spacecraft guidance and control

Details A radiation-hardened star scanner for spacecraft guidance and control A radiation-hardened star scanner for spacecraft guidance and control

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981guco.conf..520b&link_type=abstract

In: Guidance and Control Conference, Albuquerque, NM, August 19-21, 1981, Collection of Technical Papers. (A81-44076 21-12) New

Physics

Optics

Galileo Spacecraft, Radiation Hardening, Spacecraft Control, Spacecraft Guidance, Spacecraft Instruments, Star Trackers, Astrionics, Cerenkov Radiation, Jupiter (Planet), Optical Equipment, Optimization, Photomultiplier Tubes, Planetary Radiation, Radiation Effects, Radiation Shielding

Scientific paper

A star scanner for the Galileo Project is described. Because it must function in the intense Jupiter radiation field, which consists primarily of high-energy electrons and protons, this star scanner is designed with radiation-hardness as a prime objective. The optics and the multiplier phototube are specially designed to minimize fluorescence and Cerenkov effects, and the electronic components to minimize ionization and displacement damage. The star-scanner layout provides maximum shielding for the optics and phototube. Test results predict successful operation in the expected Jovian radiation environment.

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