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Proceedings Paper

Laboratory performance of the shaped pupil coronagraphic architecture for the WFIRST/AFTA coronagraph
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Paper Abstract

One of the two primary architectures being tested for the WFIRST-AFTA coronagraph instrument is the shaped pupil coronagraph, which uses a binary aperture in a pupil plane to create localized regions of high contrast in a subsequent focal plane. The aperture shapes are determined by optimization, and can be designed to work in the presence of secondary obscurations and spiders - an important consideration for coronagraphy with WFIRST-AFTA. We present the current performance of the shaped pupil testbed, including the results of AFTA Milestone 2, in which ≈ 6 × 10-9 contrast was achieved in three independent runs starting from a neutral setting.

Paper Details

Date Published: 16 September 2015
PDF: 9 pages
Proc. SPIE 9605, Techniques and Instrumentation for Detection of Exoplanets VII, 96050B (16 September 2015); doi: 10.1117/12.2189113
Show Author Affiliations
Eric Cady, Jet Propulsion Lab. (United States)
Camilo Mejia Prada, Jet Propulsion Lab. (United States)
Xin An, Jet Propulsion Lab. (United States)
Kunjithapatham Balasubramanian, Jet Propulsion Lab. (United States)
Rosemary Diaz, Jet Propulsion Lab. (United States)
N. Jeremy Kasdin, Princeton Univ. (United States)
Brian Kern, Jet Propulsion Lab. (United States)
Andreas Kuhnert, Jet Propulsion Lab. (United States)
Bijan Nemati, Jet Propulsion Lab. (United States)
Keith Patterson, Jet Propulsion Lab. (United States)
Ilya Poberezhskiy, Jet Propulsion Lab. (United States)
A. J. Eldorado Riggs, Princeton Univ. (United States)
Daniel Ryan, Jet Propulsion Lab. (United States)
Hanying Zhou, Jet Propulsion Lab. (United States)
Robert Zimmer, Jet Propulsion Lab. (United States)
Neil T. Zimmerman, Princeton Univ. (United States)


Published in SPIE Proceedings Vol. 9605:
Techniques and Instrumentation for Detection of Exoplanets VII
Stuart Shaklan, Editor(s)

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