22 August 2017 Metrology for trending alignment of the James Webb Space Telescope before and after ambient environmental testing
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Abstract
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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Theo Hadjimichael, Theo Hadjimichael, Raymond G. Ohl, Raymond G. Ohl, Josh Berrier, Josh Berrier, Jeff Gum, Jeff Gum, Joseph Hayden, Joseph Hayden, Manal Khreishi, Manal Khreishi, Kyle McLean, Kyle McLean, Kevin Redman, Kevin Redman, Joseph Sullivan, Joseph Sullivan, Greg Wenzel, Greg Wenzel, William Eichhorn, William Eichhorn, Jerrod Young, Jerrod Young, } "Metrology for trending alignment of the James Webb Space Telescope before and after ambient environmental testing", Proc. SPIE 10377, Optical System Alignment, Tolerancing, and Verification XI, 103770I (22 August 2017); doi: 10.1117/12.2273991; https://doi.org/10.1117/12.2273991
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