The sensitivity of shaped pupil coronagraphs to optical aberrations

Joseph J. Green, Stuart B. Shaklan, Robert Joseph Vanderbei, N. Jeremy Kasdin

Research output: Contribution to journalConference article

14 Scopus citations

Abstract

Unlike focal-plane coronagraphs that use occulting spots and Lyot stops to eliminate diffraction, pupil-plane coronagraphs operate by shaping the pupil to redirect the diffracted stellar light into a tight core. As with focal-plane coronagraphs, the optical aberrations in the telescope must be sufficiently corrected to enable high contrast imaging. However, in shaped-pupil coronagraphs, the low-order aberrations resulting from misalignment and optical figure drift have a much smaller influence upon the contrast at the inner working angle. These weaker sensitivities greatly relax the strict low-order wavefront stability required for high-contrast imaging at the cost of some throughput. In this paper, we present the simulated performance of the concentric ring shaped pupil concepts comparing them to focal-plane coronagraphs that are optimized for the same inner working angles.

Original languageEnglish (US)
Pages (from-to)1358-1367
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5487
Issue numberPART 3
DOIs
StatePublished - Dec 20 2004
EventOptical, Infrared, and Millimeter Space Telecopes - Glasgow, United Kingdom
Duration: Jun 21 2004Jun 25 2004

All Science Journal Classification (ASJC) codes

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

Keywords

  • Coronagraphic telescope
  • Error modeling
  • Extrasolar planets
  • Optical aberrations
  • Shaped pupil

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