1 September 2017 The WFIRST coronagraph instrument optical design update
Author Affiliations +
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.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hong Tang, Richard Demers, John Krist, James McGuire, Mayer Rud, and Feng Zhao "The WFIRST coronagraph instrument optical design update", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 1040003 (1 September 2017); doi: 10.1117/12.2274549; https://doi.org/10.1117/12.2274549

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