From Event: SPIE Optical Engineering + Applications, 2016
This paper describes the critical instrument alignment terms associated with the six-degree of freedom alignment of each the Science Instrument (SI) in the James Webb Space Telescope (JWST), including focus, pupil shear, pupil clocking, and boresight. We present the test methods used during cryogenic-vacuum tests to directly measure the performance of each parameter, the requirements levied on each, and the impact of any violations of these requirements at the instrument and Observatory level.
Scott O. Rohrbach, David A. Kubalak, Renee M. Gracey, Derek S. Sabatke, Joseph M. Howard, Randal C. Telfer, and Thomas P. Zielinski, "Critical science instrument alignment of the James Webb Space Telescope (JWST) Integrated Science Instrument Module (ISIM)," Proc. SPIE 9951, Optical System Alignment, Tolerancing, and Verification X, 995106 (Presented at SPIE Optical Engineering + Applications: August 28, 2016; Published: 27 September 2016); https://doi.org/10.1117/12.2238825.
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