WFIRST CGI integral field spectrograph performance and post-processing in the OS6 observing scenario

Maxime J. Rizzo; Neil T. Zimmerman; Tyler D. Groff; John Krist; A.J. Eldorado Riggs; Qian Gong; Avi M. Mandell; Prabal Saxena; Michael W. McElwain; Aki Roberge

doi:10.1117/12.2312400

1 August 2018 WFIRST CGI integral field spectrograph performance and post-processing in the OS6 observing scenario

Maxime J. Rizzo, Neil T. Zimmerman, Tyler D. Groff, John Krist, A.J. Eldorado Riggs, Qian Gong, Avi M. Mandell, Prabal Saxena, Michael W. McElwain, Aki Roberge

Author Affiliations +

Proceedings Volume 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave; 106986U (2018) https://doi.org/10.1117/12.2312400
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The WFIRST coronagraph instrument (CGI) will have an integral field spectrograph (IFS) backend to disperse the entire field of view at once and obtain spatially-resolved, low-resolution spectra of the speckles and science scene. The IFS will be key to understanding the spectral nature of the speckles, obtain science spectra of planets and disks, and will be used for broadband wavefront control. In order to characterize, predict, and optimize the performance of the instrument, we present a detailed model of the IFS in the context of the new OS6 observing scenario. The simulation includes spatial, spectral, and temporal variations of the speckle field on the IFS detector plane, which allows us to explore several post-processing methods and assess what gains can be expected. The simulator includes the latest models of the detector behavior when operating in photon-counting mode.

Citation Download Citation

Maxime J. Rizzo, Neil T. Zimmerman, Tyler D. Groff, John Krist, A.J. Eldorado Riggs, Qian Gong, Avi M. Mandell, Prabal Saxena, Michael W. McElwain, and Aki Roberge "WFIRST CGI integral field spectrograph performance and post-processing in the OS6 observing scenario", Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106986U (1 August 2018); https://doi.org/10.1117/12.2312400

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