Shaped pupil Lyot coronagraph designs for WFIRST/AFTA

Neil T. Zimmerman, A. J.Eldorado Riggs, N. Jeremy Kasdin, Alexis Carlotti, Robert J. Vanderbei

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

9 Scopus citations


The baseline design for the WFIRST-AFTA Coronagraphic Instrument includes several shaped pupil masks. Our newest designs incorporate the shaped pupil into a Lyot-style architecture to access smaller inner working angles at a given tradeoff in throughput and contrast. We describe two mask configurations: a characterization mode for spectroscopy of exoplanet atmospheres, and a wider-field mode for debris disk observations. We use polychromatic contrast constraints to anchor the spatial extent of the dark search region over the instrument filter bandpass. We examine several practical issues that arise during the optimization process, such as the use of symmetry, and the choice of spatial and wavelength resolutions in the propagation model. Finally, we evaluate the tolerances of the new designs to mask translation and clocking errors.

Original languageEnglish (US)
Title of host publicationTechniques and Instrumentation for Detection of Exoplanets VII
EditorsStuart Shaklan
ISBN (Electronic)9781628417715
StatePublished - 2015
EventTechniques and Instrumentation for Detection of Exoplanets VII - San Diego, United States
Duration: Aug 10 2015Aug 13 2015

Publication series

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


OtherTechniques and Instrumentation for Detection of Exoplanets VII
Country/TerritoryUnited States
CitySan Diego

All Science Journal Classification (ASJC) codes

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


  • High-contrast imaging
  • coronagraph
  • exoplanet
  • optimization
  • space telescope


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