Open AccessMetrology for trending alignment of the James Webb Space Telescope before and after ambient environmental testing
Author(s) -
Joshua Berrier,
Jeffery S. Gum,
Joseph E. Hayden,
Manal Khreishi,
Kyle F. Mclean,
Raymond G. Ohl,
Kevin Redman,
Joseph Sullivan,
Gregory W. Wenzel,
Jerrod L. Young,
Theodore J. Hadjimichael,
William L. Eichhorn
Publication year - 2017
Publication title -
nasa sti repository (national aeronautics and space administration)
Language(s) - English
Resource type - Conference proceedings
DOI - 10.1117/12.2273991
Subject(s) - james webb space telescope , telescope , observatory , spacecraft , metrology , optical telescope , primary mirror , spitzer space telescope , physics , astronomy , aerospace engineering , optics , remote sensing , engineering , geology
NASA’s 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 measure changes in subassembly alignment, including the primary mirror segments, the secondary mirror to its support structure, the tertiary mirror assembly to the backplane of the telescope and ISIM.
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