WFIRST-AFTA coronagraph performance: feedback from post-processing studies to overall design

Bertrand Mennesson; John Krist; Bijan Nemati; Marie Ygouf; Laurent Pueyo; Remi Soummer; Marshall Perrin

doi:10.1117/12.2189403

16 September 2015 WFIRST-AFTA coronagraph performance: feedback from post-processing studies to overall design

Bertrand Mennesson, John Krist, Bijan Nemati, Marie Ygouf, Laurent Pueyo, Remi Soummer, Marshall Perrin

Proceedings Volume 9605, Techniques and Instrumentation for Detection of Exoplanets VII; 96050D (2015) https://doi.org/10.1117/12.2189403
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The WFIRST-AFTA Coronagraph aims at forming direct images and measuring the first spectra of exoplanets in orbit around main sequence stars. An important aspect of the instrument is the ability to remove residual stellar speckles to improve the detectability of such planets. Based on detailed simulations and early laboratory tests, we present here some first estimates of the contrast gain expected from advanced post-processing treatments of AFTA-like coronagraphic images. We further discuss their impact on the overall design of the instrument, including its anticipated observing approach.

Citation Download Citation

Bertrand Mennesson, John Krist, Bijan Nemati, Marie Ygouf, Laurent Pueyo, Remi Soummer, and Marshall Perrin "WFIRST-AFTA coronagraph performance: feedback from post-processing studies to overall design", Proc. SPIE 9605, Techniques and Instrumentation for Detection of Exoplanets VII, 96050D (16 September 2015); https://doi.org/10.1117/12.2189403

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