A study into the loss of lock of the space telescope fine guidance sensor

Details A study into the loss of lock of the space telescope fine guidance sensor A study into the loss of lock of the space telescope fine guidance sensor

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8326768p&link_type=abstract

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Mathematics

Probability

Astronomical Observatories, Guidance Sensors, Hubble Space Telescope, Pointing Control Systems, Star Trackers, Optical Equipment, Sensors, Space Shuttles, Spaceborne Telescopes

Scientific paper

The results of a study into the loss of lock phenomenon associated with the Space Telescope Fine Guidance Sensor (FGS) are documented. The primary cause of loss of lock has been found to be a combination of cosmic ray spikes and photon noise due to a 14.5 Mv star. The probability of maintaining lock versus time is estimated both for the baseline FGS design and with parameter changes in the FGS firmware which will improve the probability of maintaining lock. The parameters varied are changeable in-flight from the ground and hence do not impact the design of the FGS hardware.

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