HST Two-Gyro Handbook

Acknowledgments

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The information in this Handbook is a brief summary of the experience gained by many individuals working on the HST two-gyro mode development at STScI and elsewhere. Some of the material contained herein is based upon results of the February 2005 two-gyro on-orbit test, the August 2005 two-gyro transition orbital verification, and information presented at the HST Two-Gyro Phase I Design Review (February 2004) and Critical Design Review (July 2004). Additional material related to guiding performance and pointing jitter is derived from analyses of HST pointing control simulations performed by the HST Pointing and Control Systems group at Lockheed Martin Technical Operations Company. We thank all of the individuals and groups involved in these design reviews and simulations for their efforts. We especially thank Brian Clapp for his efforts in leading the simulation efforts.

The STScI Two-Gyro Team, which assessed the instrument performance results from the February 2005 tests and August 2005 orbital verification, included: Santiago Arribas, Ed Bergeron, Carl Biagetti, John Biretta, Colin Cox, Roelof de Jong, Rodger Doxsey, Ron Gilliland, Anton Koekemoer, Vera Kozhurina-Platais, Ray Lucas, Jennifer Mack, Sangeeta Malhotra, Ed Nelan, Keith Noll, Cheryl Pavlovsky, Adam Riess, Kailash Sahu, Glenn Schneider (U. Arizona), Ken Sembach, Marco Sirianni, Tommy Wiklind, and Chun Xu. The STScI Two-Gyro Planning Team for the February 2005 and August 2005 tests included Allison Vick, George Chapman, and Merle Reinhart.

We thank Ron Downes for assistance with the graphical material in the observation planning portion of the Handbook. We thank Susan Rose and Jim Younger for their assistance with the hardcopy and web-based production of the Handbook.