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12 July 2018 JWST cryo fine guidance closed loop test results
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Abstract
The James Webb Space Telescope uses the Fine Guidance Controller to achieve pointing accuracy to a millionth of a degree needed for its scientific observations. This closed loop controller includes the Fine Guidance Sensor instrument, the Attitude Control System, and the Fine Steering Mirror, all working together to generate precise attitude updates every 64 ms to stabilize and point the Observatory. It was exercised for the first time with the flight hardware during the cryogenic test at Johnson Space Center. We provide a top level summary of the test, the results, and its performance in preparation for on-orbit operations.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Begoña Vila , Scott D. Lambros, David M. Diaz, Henry Fu, Steven S. Lee, Luis Meza, Kevin J. Phillips, Ben Del Rosario, and J. Carl Wu "JWST cryo fine guidance closed loop test results", Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106983R (12 July 2018); https://doi.org/10.1117/12.2311516
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