NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Metrology for Trending Alignment of the James Webb Space Telescope Before and After Ambient Environmental TestingNASAs James Webb Space Telescope (JWST) is a 6.6m diameter, segmented, deployable telescope for cryogenic IR space astronomy. The JWST Observatory architecture includes the Optical Telescope Element (OTE) and the Integrated Science Instrument Module (ISIM) element which contains four science instruments (SIs). Prior to integration with the spacecraft, the JWST optical assembly is put through rigorous launch condition environmental testing. This work reports on the metrology operations conducted to determine any changes in subassembly alignment, including primary mirror segments with respect to each other, the secondary mirror to its support structure, the tertiary mirror assembly to the backplane of the telescope and ultimately to the ISIM.
Document ID
20170006545
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Hadjimichael, Theo
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Ohl, Raymond G.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Berrier, Joshua
(Atair Aerospace Brooklyn, NY, United States)
Gum, Jeff
(Genesis Engineering Solutions, Inc. Lanham, MD, United States)
Hayden, Joseph
(Sigma Space Corp. Lanham, MD, United States)
Khreishi, Manal
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Mclean, Kyle
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Redman, Kevin
(Sierra Lobo, Inc. Greenbelt, MD, United States)
Sullivan, Joseph
(Ball Aerospace and Technologies Corp. Lanham, MD, United States)
Wenzel, Greg
(Sierra Lobo, Inc. Greenbelt, MD, United States)
Eichhorn, William
(Genesis Engineering Solutions, Inc. Lanham, MD, United States)
Young, Jerrod
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
July 13, 2017
Publication Date
August 6, 2017
Subject Category
Optics
Report/Patent Number
GSFC-E-DAA-TN44262
Meeting Information
Meeting: SPIE Optics and Photonics 2017 Conference
Location: San Diego, CA
Country: United States
Start Date: August 6, 2017
End Date: August 10, 2017
Sponsors: International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: NNG15CR64C
CONTRACT_GRANT: NNG14FC86T
CONTRACT_GRANT: NNG14CR62C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
instrument development
technology development
spaceborne telescopes
No Preview Available