Pupil mapping exoplanet coronagraphic observer (PECO)

Olivier Guyon, James R.P. Angel, Dana Backman, Ruslan Belikov, Donald Gavel, Amir Giveon, Thomas Greene, Jeremy Kasdin, James Kasting, Marie Levine, Mark Marley, Michael Meyer, Glenn Schneider, Gene Serabyn, Stuart Shaklan, Michael Shao, Motohide Tamura, Domenick Tenerelli, Wesley Traub, John TraugerRobert Vanderbei, Robert A. Woodruff, Neville J. Woolf, Jeffrey Wynn

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations


The Pupil mapping Exoplanet Coronagraphic Observer (PECO) mission concept is a 1.4-m telescope aimed at imaging and characterizing extra-solar planetary systems at optical wavelengths. The coronagraphic method employed, Phase-Induced Amplitude Apodization or PIAA (a.k.a. pupil mapping) can deliver le-10 contrast at 2 lambda/D and uses almost all the starlight that passes through the aperture to maintain higher throughput and higher angular resolution than any other coronagraph or miller, making PECO the theoretically most efficient existing approach for imaging extra-solar planetary systems. PECO's instrument also incorporates deformable mirrors for high accuracy wavefront control. Our studies show that a probe-scale PECO mission with 1.4 m aperture is extremely powerful, with the capability of imaging at spectral resolution R ≈15 the habitable zones of already known F, G, K stars with sensitivity sufficient to detect planets down to Earth size, and to map dust clouds down to a fraction of our zodiacal cloud dust brightness. PECO will acquire narrow field images simultaneously in 10 to 20 spectral bands covering wavelengths from 0.4 to 1.0 μm and will utilize all available photons for maximum wavefront sensing and imaging/spectroscopy sensitivity. This approach is well suited for low-resolution spectral characterization of both planets and dust clouds with a moderately sized telescope. We also report on recent results obtained with the laboratory prototype of a coronagraphic low order wavefront sensor (CLOWFS) for PIAA coronagraph. The CLOWFS is a key part of PECO's design and will enable high contrast at the very small PECO inner working angle.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2008
Subtitle of host publicationOptical, Infrared, and Millimeter
StatePublished - 2008
EventSpace Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter - Marseille, France
Duration: Jun 23 2008Jun 28 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherSpace Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter

All Science Journal Classification (ASJC) codes

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


  • Adaptive optics
  • Coronagraphy
  • Exoplanets
  • Space telescopes


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