Lessons for WFIRST CGI from ground-based high-contrast systems

Vanessa P. Bailey, Michael Bottom, Eric Cady, Faustine Cantalloube, Jozua De Boer, Tyler Groff, John Krist, Maxwell A. Millar-Blanchaer, Arthur Vigan, Jeffrey Chilcote, Elodie Choquet, Robert J. De Rosa, Julien H. Girard, Olivier Guyon, Brian Kern, Anne Marie Lagrange, Bruce Macintosh, Jared R. Males, Christian Marois, Tiffany MeshkatJulien Milli, Mamadoue N'Diaye, Henry Ngo, Eric L. Nielsen, Jason Rhodes, Garreth Ruane, Rob G. Van Holstein, Jason J. Wang, Wenhao Xuan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations


The Coronagraph Instrument (CGI) for NASA's Wide Field Infrared Survey Telescope (WFIRST) will constitute a dramatic step forward for high-contrast imaging, integral field spectroscopy, and polarimetry of exoplanets and circumstellar disks, aiming to improve upon the sensitivity of current ground-based direct imaging facilities by 2-3 orders of magnitude. Furthermore, CGI will serve as a pathfinder for future exo-Earth imaging and characterization missions by demonstrating wavefront control, coronagraphy, and spectral retrieval in a new contrast regime, and by validating instrument and telescope models at unprecedented levels of precision. To achieve this jump in performance, it is critical to draw on the experience of ground-based high-contrast facilities. We discuss several areas of relevant commonalities, including: wavefront control, post-processing of integral field unit data, and calibration and observing strategies.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2018
Subtitle of host publicationOptical, Infrared, and Millimeter Wave
EditorsGiovanni G. Fazio, Howard A. MacEwen, Makenzie Lystrup
ISBN (Print)9781510619494
StatePublished - 2018
EventSpace Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave - Austin, United States
Duration: Jun 10 2018Jun 15 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherSpace Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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