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Proceedings Paper

Infrared differential imager and spectrograph for SPHERE: performance status with extreme adaptive optics before shipment to ESO/VLT
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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 science goal is the detection and characterization of giant planets, together with observation of circumstellar environment. The infrared differential imager and spectrograph (IRDIS), one of the three science instruments for SPHERE, provides simultaneous differential imaging in the near infrared, among with long slit spectroscopy, classical imaging and infrared polarimetry. IRDIS is designed to achieve very high contrast with the help of extreme-AO (Strehl < 90%), coronography, exceptional image quality (including non-common-path aberrations compensation), very accurate calibration strategies and very advanced data processing for speckle suppression. In this paper, we report on the latest experimental characterizations of IRDIS performed with SPHERE/SAXO before the preliminary acceptance in Europe.

Paper Details

Date Published: 13 September 2012
PDF: 11 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84473B (13 September 2012); doi: 10.1117/12.927099
Show Author Affiliations
M. Langlois, CNRS, Ctr. de Recherche Astrophysique de Lyon, Univ. Lyon 1, Observatoire de Lyon (France)
A. Vigan, Lab. d’Astrophysique de Marseille, CNRS, Univ. de Provence (France)
C. Moutou, Lab. d’Astrophysique de Marseille, CNRS, Univ. de Provence (France)
K. Dohlen, Lab. d’Astrophysique de Marseille, CNRS, Univ. de Provence (France)
A. Costille, Institut de Planétologie et d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)
D. Le Mignant, Lab. d’Astrophysique de Marseille, CNRS, Univ. de Provence (France)
P. Martinez, Institut de Planétologie et d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)
D. Mouillet, Institut de Planétologie et d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)
A. Boccaletti, LESIA - Observatoire de Paris (France)
O. Moeller-Nilsson, Max-Planck-Institut für Astronomie (Germany)
J.-F. Sauvage, ONERA (France)
L. Mugnier, ONERA (France)
M. Feldt, Max-Planck-Institut für Astronomie (Germany)
C. Gry, Lab. d’Astrophysique de Marseille, CNRS, Univ. de Provence (France)
F. Wildi, Observatoire de Genève, Univ. de Genève (Switzerland)
J.-L. Beuzit, Institut de Planétologie et d'Astrophysique de Grenoble, CNRS, Univ. Joseph Fourier (France)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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