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Proceedings Paper

WFIRST coronagraph flight performance modeling
Author(s): John Krist; Robert Effinger; Brian Kern; Milan Mandic; James McGuire; Dwight Moody; Patrick Morrissey; Ilya Poberezhskiy; A. J. Riggs; Navtej Saini; Erkin Sidick; Hong Tang; John Trauger
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Paper Abstract

As it has for the past few years, numerical modeling is being used to predict the on-orbit, high-contrast imaging performance of the WFIRST coronagraph, which was recently defined to be a technology demonstrator with science capabilities. A consequence has been a realignment of modeling priorities and revised applications of modeling uncertainty factors and margins, which apply to multiple factors such as pointing and wavefront jitter, thermally-induced deformations, polarization, and aberration sensitivities. At the same time, the models have increased in fidelity as additional parameters have been added, such as time-dependent pupil shear and mid-spatial-frequency deformations of the primary and secondary mirrors, detector effects, and reaction-wheel-speed-dependent pointing and wavefront jitter.

Paper Details

Date Published: 16 July 2018
PDF: 23 pages
Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106982K (16 July 2018); doi: 10.1117/12.2310043
Show Author Affiliations
John Krist, Jet Propulsion Lab. (United States)
Robert Effinger, Jet Propulsion Lab. (United States)
Brian Kern, Jet Propulsion Lab. (United States)
Milan Mandic, Jet Propulsion Lab. (United States)
James McGuire, Jet Propulsion Lab. (United States)
Dwight Moody, Jet Propulsion Lab. (United States)
Patrick Morrissey, Jet Propulsion Lab. (United States)
Ilya Poberezhskiy, Jet Propulsion Lab. (United States)
A. J. Riggs, Jet Propulsion Lab. (United States)
Navtej Saini, Jet Propulsion Lab. (United States)
Erkin Sidick, Jet Propulsion Lab. (United States)
Hong Tang, Jet Propulsion Lab. (United States)
John Trauger, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 10698:
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Makenzie Lystrup; Howard A. MacEwen; Giovanni G. Fazio; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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