Achromatic prolate coronagraph using interferometric apodisations

L. Pueyo, C. Aime, R. Soummer, A. Give On, N. J. Kasdin

Research output: Contribution to journalConference article

Abstract

Recent developments in coronagraphy have increased the reachable dynamic range limit of telescopes and thus opened the possibility for the imaging of fainter and fainter companions. They rely on a series of modifications of the original concept involving amplitude and phase masks in either the pupil or the image plane. They are designed to operate optimally at one wavelength. In this paper we first study the chromatic leakage in Pupil Apodised Lyot Coronagraphs and then present a theoretical solution that create a polychromatic null while maximizing the photon flux from the companion. Finally we discuss a promising experimental implementation of this solution using interferometric apodisations.

Original languageEnglish (US)
Pages (from-to)239-251
Number of pages13
JournalEAS Publications Series
Volume22
DOIs
StatePublished - Dec 21 2006
EventAstronomy with High Contrast Imaging III: Instrumental Techniques, Modeling and Data Processing - Frejus, France
Duration: May 16 2005May 19 2005

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Engineering(all)
  • Space and Planetary Science

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    Pueyo, L., Aime, C., Soummer, R., Give On, A., & Kasdin, N. J. (2006). Achromatic prolate coronagraph using interferometric apodisations. EAS Publications Series, 22, 239-251. https://doi.org/10.1051/eas:2006136