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Proceedings Paper

WFIRST-AFTA coronagraph instrument overview
Author(s): Feng Zhao
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Paper Abstract

The WFIRST-AFTA coronagraph will directly image exoplanets and disks around nearby stars, and obtain spectra. The coronagraph has photometric bands covering about 400-1000 nm, and an integral field spectrometer with a resolution of about 70. The range of sensitivity in angular separation from a star is about 0.1 to 0.6 arc-seconds. The limiting contrast is about 10-9, and a goal of 10-10. The engineering development program is focused on low-order wavefront sensing and control, coronagraph masks, coronagraph performance, speckle detection and suppression, post-processing algorithms, an integral field spectrometer, and low-noise detectors. Progress and plans in these areas will be reviewed.

Paper Details

Date Published: 2 August 2014
PDF: 7 pages
Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91430O (2 August 2014); doi: 10.1117/12.2060319
Show Author Affiliations
Feng Zhao, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 9143:
Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann; Mark Clampin; Giovanni G. Fazio; Howard A. MacEwen, Editor(s)

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