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Journal of Astronomical Telescopes, Instruments, and Systems

Demonstration of high contrast with an obscured aperture with the WFIRST-AFTA shaped pupil coronagraph
Author(s): Eric J. Cady; Camilo A. Mejia Prada; Xin An; Kunjithapatham Balasubramanian; Rosemary T. Diaz; N. Jeremy Kasdin; Brian D. Kern; Andreas C. Kuhnert; Bijan Nemati; Ilya Poberezhskiy; A. J. Eldorado Riggs; Robert P. Zimmer; Neil T. Zimmerman
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Paper Abstract

The coronagraph instrument on the Wide-Field Infrared Survey Telescope-Astrophysics-Focused Telescope Asset (WFIRST-AFTA) mission study has two coronagraphic architectures, shaped pupil and hybrid Lyot, which may be interchanged for use in different observing scenarios. Each architecture relies on newly developed mask components to function in the presence of the AFTA aperture, and so both must be matured to a high technology readiness level in advance of the mission. A series of milestones were set to track the development of the technologies required for the instrument; we report on completion of WFIRST-AFTA coronagraph milestone 2—a narrowband 10−8 contrast test with static aberrations for the shaped pupil—and the plans for the upcoming broadband coronagraph milestone 5.

Paper Details

Date Published: 28 October 2015
PDF: 12 pages
J. Ast. Inst. Sys. 2(1) 011004 doi: 10.1117/1.JATIS.2.1.011004
Published in: Journal of Astronomical Telescopes, Instruments, and Systems Volume 2, Issue 1
Show Author Affiliations
Eric J. Cady, Jet Propulsion Lab. (United States)
Camilo A. Mejia Prada, Jet Propulsion Lab. (United States)
Xin An, Jet Propulsion Lab. (United States)
Kunjithapatham Balasubramanian, Jet Propulsion Lab. (United States)
Rosemary T. Diaz, Jet Propulsion Lab. (United States)
N. Jeremy Kasdin, Princeton Univ. (United States)
Brian D. Kern, Jet Propulsion Lab. (United States)
Andreas C. Kuhnert, Jet Propulsion Lab. (United States)
Bijan Nemati, Jet Propulsion Lab. (United States)
Ilya Poberezhskiy, Jet Propulsion Lab. (United States)
A. J. Eldorado Riggs, Princeton Univ. (United States)
Robert P. Zimmer, Jet Propulsion Lab. (United States)
Neil T. Zimmerman, Princeton Univ. (United States)

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