13 September 2012 Wavefront calibration testing of the James Webb Space Telescope primary mirror center of curvature optical assembly
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Abstract
The James Webb Space Telescope (JWST) Optical Telescope Element (OTE) consists of a 6.6 meter clear aperture, all-reflective, three-mirror anastigmat. The 18-segment primary mirror (PM) presents unique and challenging assembly, integration, alignment and testing requirements. A full aperture center of curvature optical test is performed in cryogenic vacuum conditions at the integrated observatory level to verify PM performance requirements. Two wavefront calibration tests are utilized to verify the low and mid/high spatial frequency performance of the test system. In this paper the methods and results of the wavefront calibration tests are presented.
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Gene Olczak, Conrad Wells, David J. Fischer, Mark T. Connolly, "Wavefront calibration testing of the James Webb Space Telescope primary mirror center of curvature optical assembly", Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84500R (13 September 2012); doi: 10.1117/12.927003; https://doi.org/10.1117/12.927003
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