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Proceedings Paper

Infrared differential imager and spectrograph for SPHERE: performance assessment for on-sky operation
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Paper Abstract

SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) is a second-generation instrument for the VLT, optimized for very high-contrast imaging around bright stars. Its primary goal is the detection and characterization of new giant planets around nearby stars, together with the observation of early planetary systems and disks. The Infrared Dual Imager and Spectrograph (IRDIS), one of the three SPHERE subsystems, will provide dual-band imaging in the near-infrared, among with other observing modes such as long slit spectroscopy, classical imaging and infrared polarimetry. IRDIS is able to achieve very high contrast with the help of extreme-AO turbulence compensation, coronography, exceptional image quality, very accurate calibration strategies and advanced data processing. IRDIS underwent extensively laboratory testing during the integration and optimization of SPHERE at IPAG and it is now integrated to the VLT/ESO. We will present the results of performances and operations validations performed with SPHERE. In particular we present the achievable level of contrast and compare it with on-sky results obtained at the VLT/ESO.

Paper Details

Date Published: 28 July 2014
PDF: 8 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91479P (28 July 2014); doi: 10.1117/12.2055535
Show Author Affiliations
Maud Langlois, Ctr. de Recherche Astronomique de Lyon, Observatoire de Lyon, CNRS, Univ. de Lyon 1 (France)
Ecole Normale Supérieure de Lyon (France)
Arthur Vigan, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Kjetil Dohlen, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Claire Moutou, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Jean-Luc Beuzit, Institut de Planétologie et d’Astrophysique de Grenoble (France)
A. Boccaletti, LESIA, Observatoire de Paris (France)
Michael Carle, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Anne Costille, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
R. Dorn, European Southern Observatory (Germany)
Laurence Gluck, Institut de Planétologie et d’Astrophysique de Grenoble (France)
C. Gry, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
N. Hubin, European Southern Observatory (Germany)
M. Feldt, Max-Planck-Institut für Astronomie (Germany)
M. Kasper, European Southern Observatory (Germany)
Fabrice Madec, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
David Le Mignant, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
J.-L. Lizon, European Southern Observatory (Germany)
David Mouillet, Institut de Planétologie et d’Astrophysique de Grenoble (France)
A. Origné, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
P. Puget, Institut de Planétologie et d’Astrophysique de Grenoble (France)
Jean-François Sauvage, ONERA (France)
F. Wildi, Observatoire Astronomique de l’Univ. de Genève (Switzerland)
A. Zurlo, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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