The in-flight calibration of the Hubble Space Telescope fine guidance sensors

Details The in-flight calibration of the Hubble Space Telescope fine guidance sensors The in-flight calibration of the Hubble Space Telescope fine guidance sensors

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991esasp.326..239w&link_type=abstract

In ESA, Spacecraft Flight Dynamics p 239-244 (SEE N92-24719 15-12)

Computer Science

Performance

Calibrating, Data Acquisition, Guidance Sensors, Hubble Space Telescope, Algorithms, Alignment, Distortion, Magnification

Scientific paper

The Hubble Space Telescope (HST) fine guidance sensors are unique in the precision and performance levels being attempted; spacecraft control and astrometric research at the near milliarcsecond level are the ultimate goals. The inflight calibration of the sensors is presented, describing both the algorithms being used as well as the results achieved to date. The calibration items of principal interest are optical distortion, sensor magnification, and relative alignments. Calibration accuracies at the 20 milliarcsecond level have been achieved for specific data sets for optical distortion parameters. Unexpected variations occurring from Dec. 1990 - May 1991 in the magnification and alignment parameters are currently under investigation. Plans are being developed for new data acquisitions and reductions that should substantially improve HST pointing performance.

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