The pupil-swapping coronagraph

Olivier Guyon, M. Shao

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A new coronagraph that performs destructive interference between copies of the telescope pupil in which "slices" have been swapped is studied in this paper. A fourth-order "pupil-swapping coronagraph" is particularly attractive for direct imaging of extrasolar terrestrial planets: it achieves 100% throughput at 1.4λ/d on a square pupil (72,5% at 1.77λ/d on a circular pupil), is compatible with a central obstruction and spiders, and delivers sharp images of off-axis sources. Direct detection of extrasolar terrestrial planets appears theoretically feasible on a 2 to 3 m visible-wavelength telescope in space.

Original languageEnglish (US)
Pages (from-to)860-865
Number of pages6
JournalPublications of the Astronomical Society of the Pacific
Volume118
Issue number844
DOIs
StatePublished - Jun 2006
Externally publishedYes

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coronagraphs
pupils
planet
terrestrial planets
extrasolar planets
spider
telescopes
wavelength
spiders
interference
wavelengths
detection

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

The pupil-swapping coronagraph. / Guyon, Olivier; Shao, M.

In: Publications of the Astronomical Society of the Pacific, Vol. 118, No. 844, 06.2006, p. 860-865.

Research output: Contribution to journalArticle

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