Phase-induced amplitude apodization of telescope pupils for extrasolar terrestrial planet imaging

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263 Scopus citations

Abstract

In this paper, an alternative to classical pupil apodization techniques (use of an amplitude pupil mask) is proposed. It is shown that an achromatic apodized pupil suitable for imaging of extrasolar planets can be obtained by reflection of an unapodized flat wavefront on two mirrors. By carefully choosing the shape of these two mirrors, it is possible to obtain a contrast better than 109 at a distance smaller than 2λ/d from the optical axis. Because this technique preserves both the angular resolution and light gathering capabilities of the unapodized pupil, it allows efficient detection of terrestrial extrasolar planets with a 1.5 m telescope in the visible.

Original languageEnglish (US)
Pages (from-to)379-387
Number of pages9
JournalAstronomy and astrophysics
Volume404
Issue number1
DOIs
StatePublished - Jun 2003
Externally publishedYes

Keywords

  • Stars: planetary systems
  • Techniques: high angular resolution
  • Telescopes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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