Phase-induced pupil apodization: A new concept for a simplier Darwin/TPF

Olivier Guyon, Stephen Ridgway, Masashi Otsubo

Research output: Contribution to journalConference articlepeer-review


The main obstacle toward direct imaging of exoplanets with high quality optics in space is the diffraction produced by the edges of the telescope pupil. One suggested solution to this problem is to apodize the telescope pupil with a transmissive mask. Unfortunately, this mask reduces the telescope throughput and angular resolution. In this paper, we suggest to produce an apodized pupil by geometrically remapping the entrance pupil thanks to reflective optics. We demonstrate that this technique allows direct imaging of a Earth-Sun system at 10pc in the visible in less than 1h exposure time with a 1.5m telescope.

Original languageEnglish (US)
Pages (from-to)435-440
Number of pages6
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number539
StatePublished - Apr 2003
EventProceedings of the Conference - Towards Other Earths: DARWIN/TPF and the Search for Extrasolar Terrestrial Planets - Heidelberg, Germany
Duration: Apr 22 2003Apr 25 2003


  • Apodization
  • Coronagraphy
  • Exoplanets

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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