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Proceedings Paper

WFIRST CGI integral field spectrograph performance and post-processing in the OS6 observing scenario
Author(s): 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
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Paper 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.

Paper Details

Date Published: 1 August 2018
PDF: 10 pages
Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106986U (1 August 2018); doi: 10.1117/12.2312400
Show Author Affiliations
Maxime J. Rizzo, NASA Goddard Space Flight Ctr. (United States)
Neil T. Zimmerman, NASA Goddard Space Flight Ctr. (United States)
Tyler D. Groff, NASA Goddard Space Flight Ctr. (United States)
John Krist, Jet Propulsion Lab. (United States)
A.J. Eldorado Riggs, Jet Propulsion Lab. (United States)
Qian Gong, NASA Goddard Space Flight Ctr. (United States)
Avi M. Mandell, NASA Goddard Space Flight Ctr. (United States)
Prabal Saxena, NASA Goddard Space Flight Ctr. (United States)
Michael W. McElwain, NASA Goddard Space Flight Ctr. (United States)
Aki Roberge, NASA Goddard Space Flight Ctr. (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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