Preparing for JWST wavefront sensing and control operations

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 III; 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

doi:10.1117/12.2233104

19 July 2016 Preparing for JWST wavefront sensing and control operations

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 III, 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

Author Affiliations +

Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave; 99040F (2016) https://doi.org/10.1117/12.2233104
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

Citation Download Citation

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 III, Joseph Long, Michael W. McElwain, Luis Meza, Edmund P. Nelan, Remi Soummer, John Stansberry, Christopher Stark, Randal Telfer, Andria L. Welsh, Thomas P. Zielinski, and Neil T. Zimmerman "Preparing for JWST wavefront sensing and control operations", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99040F (19 July 2016); https://doi.org/10.1117/12.2233104

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