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Proceedings Paper

The WFIRST coronagraph instrument optical design update
Author(s): Hong Tang; Richard Demers; John Krist; James McGuire; Mayer Rud; Feng Zhao
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Paper Abstract

The WFIRST Coronagraph Instrument will perform direct imaging of exoplanets via coronagraphy of the host star. It uses both the Hybrid Lyot and Shaped Pupil Coronagraphs to meet the mission requirements. The Phase A optical design fits within the allocated instrument enclosure and accommodates both coronagraphic techniques. It also meets the challenging wavefront error requirements. We present the optical performance including throughput of the imaging and IFS channels, as well as the wavefront errors at the first pupil and the imaging channel. We also present polarization effects from optical coatings and analysis of their impacts on the performance of the Hybrid Lyot coronagraph. We report the results of stray light analysis of our Occulting Mask Coronagraph testbed.

Paper Details

Date Published: 1 September 2017
PDF: 8 pages
Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 1040003 (1 September 2017); doi: 10.1117/12.2274549
Show Author Affiliations
Hong Tang, Jet Propulsion Lab. (United States)
Richard Demers, Jet Propulsion Lab. (United States)
John Krist, Jet Propulsion Lab. (United States)
James McGuire, Jet Propulsion Lab. (United States)
Mayer Rud, Jet Propulsion Lab. (United States)
Feng Zhao, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 10400:
Techniques and Instrumentation for Detection of Exoplanets VIII
Stuart Shaklan, Editor(s)

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