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Proceedings Paper

System study of EPICS: the exoplanets imager for the E-ELT
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Paper Abstract

ESO and a large European consortium completed the phase-A study of EPICS, an instrument dedicated to exoplanets direct imaging for the EELT. The very ambitious science goals of EPICS, the imaging of reflected light of mature gas giant exoplanets around bright stars, sets extremely strong requirements in terms of instrumental contrast achievable. The segmented nature of an ELT appears as a very large source of quasi-static high order speckles that can impair the detection of faint sources with small brightness contrast with respect to their parent star. The paper shows how the overall system has been designed in order to maximize the efficiency of quasi-static speckles rejection by calibration and post-processing using the spectral and polarization dependency of light waves. The trade-offs that led to the choice of the concepts for common path and diffraction suppression system is presented. The performance of the instrument is predicted using simulations of the extreme Adaptive Optics system and polychromatic wave-front propagation through the various optical elements.

Paper Details

Date Published: 28 July 2010
PDF: 12 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77361N (28 July 2010); doi: 10.1117/12.857096
Show Author Affiliations
Christophe Vérinaud, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Markus Kasper, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Jean-Luc Beuzit, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Raffaele G. Gratton, Osservatorio Astronomico di Padova (Italy)
Dino Mesa, Osservatorio Astronomico di Padova (Italy)
Emmanuel Aller-Carpentier, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Enrico Fedrigo, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Lyu Abe, Univ. de Nice Sophia Antipolis (France)
Pierre Baudoz, LESIA, CNRS, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
Anthony Boccaletti, LESIA, CNRS, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
Mariangela Bonavita, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Kjetil Dohlen, Lab. d'Astrophysique de Marseille (France)
Norbert Hubin, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Florian Kerber, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Visa Korkiakoski, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Jacopo Antichi, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Patrice Martinez, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Patrick Rabou, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Ronald Roelfsema, ASTRON (Netherlands)
Hans Martin Schmid, ETH Institute of Astronomy, ETH Zurich (Switzerland)
Niranjan Thatte, Univ. of Oxford (United Kingdom)
Graeme Salter, Univ. of Oxford (United Kingdom)
Matthias Tecza, Univ. of Oxford (United Kingdom)
Lars Venema, ASTRON (Netherlands)
Hiddo Hanenburg, ASTRON (Netherlands)
Rieks Jager, ASTRON (Netherlands)
Natalia Yaitskova, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Olivier Preis, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Mélanie Orecchia, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)
Eric Stadler, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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