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Optical Testing and Verification Methods for the James Webb Space Telescope Integrated Science Instrument Module ElementNASA's James Webb Space Telescope (JWST) is a 6.6m diameter, segmented, deployable telescope for cryogenic IR space astronomy (~40K). The JWST Observatory includes the Optical Telescope Element (OTE) and the Integrated Science Instrument Module (ISIM) that contains four science instruments (SI) and the fine guider. The SIs are mounted to a composite metering structure. The SI and guider units were integrated to the ISIM structure and optically tested at the NASA Goddard Space Flight Center as a suite using the Optical Telescope Element SIMulator (OSIM). OSIM is a full field, cryogenic JWST telescope simulator. SI performance, including alignment and wave front error, were evaluated using OSIM. We describe test and analysis methods for optical performance verification of the ISIM Element, with an emphasis on the processes used to plan and execute the test. The complexity of ISIM and OSIM drove us to develop a software tool for test planning that allows for configuration control of observations, associated scripts, and management of hardware and software limits and constraints, as well as tools for rapid data evaluation, and flexible re-planning in response to the unexpected. As examples of our test and analysis approach, we discuss how factors such as the ground test thermal environment are compensated in alignment. We describe how these innovative methods for test planning and execution and post-test analysis were instrumental in the verification program for the ISIM element, with enough information to allow the reader to consider these innovations and lessons learned in this successful effort in their future testing for other programs.
Document ID
20160011118
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Antonille, Scott R.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Miskey, Cherie L.
(Stinger Ghaffarian Technologies, Inc. Greenbelt, MD, United States)
Ohl, Raymond G.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Rohrbach, Scott O.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Aronstein, David L.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Bartoszyk, Andrew E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Bowers, Charles W.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Cofie, Emmanuel
(Stinger Ghaffarian Technologies, Inc. Greenbelt, MD, United States)
Collins, Nicholas R.
(KBRwyle Houston, TX, United States)
Comber, Brian J.
(Genesis Engineering Solutions, Inc. Lanham, MD, United States)
Eichhorn, William L.
(Genesis Engineering Solutions, Inc. Lanham, MD, United States)
Glasse, Alistair C.
(United Kingdom Astronomy Technology Centre United Kingdom)
Gracey, Renee
(Ball Aerospace and Technologies Corp. Boulder, CO, United States)
Hartig, George F.
(Space Telescope Science Inst. Baltimore, MD, United States)
Howard, Joseph M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Kelly, Douglas M.
(Arizona Univ. Tucson, AZ, United States)
Kimble, Randy A.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Kirk, Jeffrey R.
(Genesis Engineering Solutions, Inc. Lanham, MD, United States)
Kubalak, David A.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Landsman, Wayne B.
(Adnet Systems, Inc. Greenbelt, MD, United States)
Lindler, Don J.
(Sigma Space Corp. Lanham, MD, United States)
Malumuth, Eliot M.
(KBRwyle Houston, TX, United States)
Maszkiewicz, Michael
(Canadian Space Agency Saint Hubert, Quebec, Canada)
Rieke, Marcia J.
(Arizona Univ. Tucson, AZ, United States)
Rowlands, Neil
(Honeywell Aerospace Ottawa, Canada)
Sabatke, Derek S.
(Ball Aerospace and Technologies Corp. Boulder, CO, United States)
Smith, Corbett T.
(Stinger Ghaffarian Technologies, Inc. Greenbelt, MD, United States)
Smith, J. Scott
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Sullivan, Joseph F.
(Ball Aerospace and Technologies Corp. Boulder, CO, United States)
Telfer, Randal C.
(Space Telescope Science Inst. Baltimore, MD, United States)
Plate, Maurice Te
(Space Telescope Science Inst. Baltimore, MD, United States)
Vila, M. Begona
(Stinger Ghaffarian Technologies, Inc. Greenbelt, MD, United States)
Warner, Gerry D.
(Honeywell Aerospace Ottawa, Canada)
Wright, Raymond H.
(AK Aerospace Technology Corp. Potomac, MD, United States)
Wright, David
(Stinger Ghaffarian Technologies, Inc. Greenbelt, MD, United States)
Zhou, Julia
(Honeywell Aerospace Ottawa, Canada)
Zielinski, Thomas P.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
September 7, 2016
Publication Date
August 28, 2016
Subject Category
Astronomy
Optics
Report/Patent Number
GSFC-E-DAA-TN35341
Meeting Information
Meeting: SPIE Optics and Photonics Conference
Location: San Diego, CA
Country: United States
Start Date: August 28, 2016
End Date: September 1, 2016
Sponsors: International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: NAS5-02105
CONTRACT_GRANT: NNG12PL17C
CONTRACT_GRANT: NNG15CR64C
TASK: NNG14FC86T
CONTRACT_GRANT: NAS5-26555
CONTRACT_GRANT: NNG13FB20C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
spaceborne telescopes
technology development
instrument development
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