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Proceedings Paper

Preparing for JWST wavefront sensing and control operations
Author(s): Marshall D. Perrin; D. Scott Acton; Charles-Philippe Lajoie; J. Scott Knight; Matthew D. Lallo; Marsha Allen; Wayne Baggett; Elizabeth Barker; Thomas Comeau; Eric Coppock; Bruce H. Dean; George Hartig; William L. Hayden; Margaret Jordan; Alden Jurling; Trey Kulp; Joseph Long; Michael W. McElwain; Luis Meza; Edmund P. Nelan; Remi Soummer; John Stansberry; Christopher Stark; Randal Telfer; Andria L. Welsh; Thomas P. Zielinski; Neil T. Zimmerman
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Paper Abstract

The James Webb Space Telescopes segmented primary and deployable secondary mirrors will be actively con- trolled to achieve optical alignment through a complex series of steps that will extend across several months during the observatory's commissioning. This process will require an intricate interplay between individual wavefront sensing and control tasks, instrument-level checkout and commissioning, and observatory-level calibrations, which involves many subsystems across both the observatory and the ground system. Furthermore, commissioning will often exercise observatory capabilities under atypical circumstances, such as fine guiding with unstacked or defocused images, or planning targeted observations in the presence of substantial time-variable offsets to the telescope line of sight. Coordination for this process across the JWST partnership has been conducted through the Wavefront Sensing and Control Operations Working Group. We describe at a high level the activities of this group and the resulting detailed commissioning operations plans, supporting software tools development, and ongoing preparations activities at the Science and Operations Center. For each major step in JWST's wavefront sensing and control, we also explain the changes and additions that were needed to turn an initial operations concept into a flight-ready plan with proven tools. These efforts are leading to a robust and well-tested process and preparing the team for an efficient and successful commissioning of JWSTs active telescope.

Paper Details

Date Published: 19 July 2016
PDF: 19 pages
Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99040F (19 July 2016); doi: 10.1117/12.2233104
Show Author Affiliations
Marshall D. Perrin, Space Telescope Science Institute (United States)
D. Scott Acton, Ball Aerospace & Technologies Corp. (United States)
Charles-Philippe Lajoie, Space Telescope Science Institute (United States)
J. Scott Knight, Ball Aerospace & Technologies Corp. (United States)
Matthew D. Lallo, Space Telescope Science Institute (United States)
Marsha Allen, Space Telescope Science Institute (United States)
Wayne Baggett, Space Telescope Science Institute (United States)
Elizabeth Barker, Space Telescope Science Institute (United States)
Thomas Comeau, Space Telescope Science Institute (United States)
Eric Coppock, Ball Aerospace & Technologies Corp. (United States)
Bruce H. Dean, NASA Goddard Space Flight Ctr. (United States)
George Hartig, Space Telescope Science Institute (United States)
William L. Hayden, NASA Goddard Space Flight Ctr. (United States)
Margaret Jordan, Space Telescope Science Institute (United States)
Alden Jurling, NASA Goddard Space Flight Ctr. (United States)
Trey Kulp, Space Telescope Science Institute (United States)
Joseph Long, Space Telescope Science Institute (United States)
Michael W. McElwain, NASA Goddard Space Flight Ctr. (United States)
Luis Meza, Northrop Grumman Aerospace Systems (United States)
Edmund P. Nelan, Space Telescope Science Institute (United States)
Remi Soummer, Space Telescope Science Institute (United States)
John Stansberry, Space Telescope Science Institute (United States)
Christopher Stark, Space Telescope Science Institute (United States)
Randal Telfer, Space Telescope Science Institute (United States)
Andria L. Welsh, Northrop Grumman Aerospace Systems (United States)
Thomas P. Zielinski, NASA Goddard Space Flight Ctr. (United States)
Neil T. Zimmerman, Space Telescope Science Institute (United States)


Published in SPIE Proceedings Vol. 9904:
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Howard A. MacEwen; Giovanni G. Fazio; Makenzie Lystrup; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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