Special Section on WFIRST-AFTA Coronagraphs

Demonstration of high contrast with an obscured aperture with the WFIRST-AFTA shaped pupil coronagraph

[+] Author Affiliations
Eric Cady, Camilo Mejia Prada, Xin An, Kunjithapatham Balasubramanian, Rosemary Diaz, Brian Kern, Andreas Kuhnert, Bijan Nemati, Ilya Poberezhskiy, Robert Zimmer

Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, United States

N. Jeremy Kasdin, A. J. Eldorado Riggs, Neil Zimmerman

Princeton University, Department of Mechanical and Aerospace Engineering, Princeton, New Jersey 08544, United States

J. Astron. Telesc. Instrum. Syst. 2(1), 011004 (Oct 28, 2015). doi:10.1117/1.JATIS.2.1.011004
History: Received June 1, 2015; Accepted September 18, 2015
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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 108 contrast test with static aberrations for the shaped pupil—and the plans for the upcoming broadband coronagraph milestone 5.

© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Eric Cady ; Camilo Mejia Prada ; Xin An ; Kunjithapatham Balasubramanian ; Rosemary Diaz, et al.
"Demonstration of high contrast with an obscured aperture with the WFIRST-AFTA shaped pupil coronagraph", J. Astron. Telesc. Instrum. Syst. 2(1), 011004 (Oct 28, 2015). ; http://dx.doi.org/10.1117/1.JATIS.2.1.011004


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