2 August 2014 WFIRST-AFTA coronagraph instrument overview
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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.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Feng Zhao, Feng Zhao, } "WFIRST-AFTA coronagraph instrument overview", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91430O (2 August 2014); doi: 10.1117/12.2060319; https://doi.org/10.1117/12.2060319

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