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Proceedings Article

Detecting and characterizing exoplanets with a 1.4-m space telescope: the Pupil mapping Exoplanet Coronagraphic Observer (PECO)

[+] Author Affiliations
Olivier Guyon

Subaru Telescope, NAOJ (USA) and The Univ. of Arizona (USA)

James R. P. Angel

The Univ. of Arizona (USA)

Ruslan Belikov, Thomas Greene, Kerri Cahoy

NASA Ames Research Ctr. (USA)

Robert Egerman

ITT Industries (USA)

Donald Gavel

Univ. of California, Santa Cruz (USA)

Amir Giveon, Brian Kern, Marie Levine, Stuart Shaklan

Jet Propulsion Lab. (USA)

Stephen Ridgway

National Optical Astronomy Observatory (USA)

Domenick Tenerelli, Robert A. Woodruff

Lockheed Martin Space Corp. (USA)

Robert Vanderbei

Princeton Univ. (USA)

Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 74400F (August 19, 2009); doi:10.1117/12.826350
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From Conference Volume 7440

  • Techniques and Instrumentation for Detection of Exoplanets IV
  • Stuart B. Shaklan
  • San Diego, CA | August 02, 2009

abstract

The Pupil-mapping Exoplanet Coronagraphic Observer (PECO) mission concept uses a coronagraphic 1.4-m space-based telescope to both image and characterize extra-solar planetary systems at optical wavelengths. PECO delivers 10-10 contrast at 2 λ/D separation (0.15") using a high-performance Phase-Induced Amplitude Apodization (PIAA) coronagraph which remaps the telescope pupil and uses nearly all of the light coming into the aperture. For exoplanet characterization, PECO acquires narrow field images simultaneously in 16 spectral bands over wavelengths from 0.4 to 0.9 μm, utilizing all available photons for maximum wavefront sensing and sensitivity for imaging and spectroscopy. The optical design is optimized for simultaneous low-resolution spectral characterization of both planets and dust disks using a moderate-sized telescope. PECO will image the habitable zones of about 20 known F, G, K stars at a spectral resolution of R≈15 with sensitivity sufficient to detect and characterize Earth-like planets and to map dust disks to within a fraction of our own zodiacal dust cloud brightness. The PIAA coronagraph adopted for PECO reduces the required telescope diameter by a factor of two compared with other coronagraph approaches that were considered for Terrestrial Planet Finder Coronagraph Flight Baseline 1, and would therefore also be highly valuable for larger telescope diameters. We report on ongoing laboratory activities to develop and mature key PECO technologies, as well as detailed analysis aimed at verifying PECO's wavefront and pointing stability requirement can be met without requiring development of new technologies.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Olivier Guyon ; James R. P. Angel ; Ruslan Belikov ; Robert Egerman ; Donald Gavel, et al.
"Detecting and characterizing exoplanets with a 1.4-m space telescope: the Pupil mapping Exoplanet Coronagraphic Observer (PECO)", Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 74400F (August 19, 2009); doi:10.1117/12.826350; http://dx.doi.org/10.1117/12.826350


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