JWST cryo fine guidance closed loop test results

M. Begoña Vila; Scott D. Lambros; David M. Diaz; Henry Fu; Steven S. Lee; Luis Meza; Kevin J. Phillips; Ben Del Rosario; J. Carl Wu

doi:10.1117/12.2311516

12 July 2018 JWST cryo fine guidance closed loop test results

M. Begoña Vila , Scott D. Lambros, David M. Diaz, Henry Fu, Steven S. Lee, Luis Meza, Kevin J. Phillips, Ben Del Rosario, J. Carl Wu

Author Affiliations +

Proceedings Volume 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave; 106983R (2018) https://doi.org/10.1117/12.2311516
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

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.

Citation Download Citation

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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available