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Proceedings Paper

Three years of harvest with the vector vortex coronagraph in the thermal infrared
Author(s): Olivier Absil; Dimitri Mawet; Mikael Karlsson; Brunella Carlomagno; Valentin Christiaens; Denis Defrère; Christian Delacroix; Bruno Femenía Castella; Pontus Forsberg; Julien Girard; Carlos A. Gómez González; Serge Habraken; Philip M. Hinz; Elsa Huby; Aïssa Jolivet; Keith Matthews; Julien Milli; Gilles Orban de Xivry; Eric Pantin; Pierre Piron; Maddalena Reggiani; Garreth J. Ruane; Gene Serabyn; Jean Surdej; Konrad R. W. Tristram; Ernesto Vargas Catalán; Olivier Wertz; Peter Wizinowich
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Paper Abstract

For several years, we have been developing vortex phase masks based on sub-wavelength gratings, known as Annular Groove Phase Masks. Etched onto diamond substrates, these AGPMs are currently designed to be used in the thermal infrared (ranging from 3 to 13 μm). Our AGPMs were first installed on VLT/NACO and VLT/VISIR in 2012, followed by LBT/LMIRCam in 2013 and Keck/NIRC2 in 2015. In this paper, we review the development, commissioning, on-sky performance, and early scientific results of these new coronagraphic modes and report on the lessons learned. We conclude with perspectives for future developments and applications.

Paper Details

Date Published: 9 August 2016
PDF: 14 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99080Q (9 August 2016); doi: 10.1117/12.2233289
Show Author Affiliations
Olivier Absil, Univ. de Liège (Belgium)
Dimitri Mawet, California Institute of Technology (United States)
Jet Propulsion Lab. (United States)
Mikael Karlsson, Uppsala Univ. (Sweden)
Brunella Carlomagno, Univ. de Liège (Belgium)
Valentin Christiaens, Univ. de Liège (Belgium)
Univ. de Chile (Chile)
Denis Defrère, Univ. de Liège (Belgium)
Christian Delacroix, Cornell Univ. (United States)
Bruno Femenía Castella, W. M. Keck Observatory (United States)
Pontus Forsberg, Uppsala Univ. (Sweden)
Julien Girard, European Southern Observatory (Chile)
Carlos A. Gómez González, Univ. de Liège (Belgium)
Serge Habraken, Univ. de Liège (Belgium)
Philip M. Hinz, Steward Observatory, The Univ. of Arizona (United States)
Elsa Huby, Univ. de Liège (Belgium)
Aïssa Jolivet, Univ. de Liège (Belgium)
Keith Matthews, California Institute of Technology (United States)
Julien Milli, European Southern Observatory (Chile)
Gilles Orban de Xivry, Univ. de Liège (Belgium)
Eric Pantin, Lab. AIM, CEA, Univ. Paris Diderot, IRFU (France)
Pierre Piron, Uppsala Univ. (Sweden)
Maddalena Reggiani, Univ. de Liège (Belgium)
Garreth J. Ruane, California Institute of Technology (United States)
Gene Serabyn, Jet Propulsion Lab. (United States)
Jean Surdej, Univ. de Liège (Belgium)
Konrad R. W. Tristram, European Southern Observatory (Chile)
Ernesto Vargas Catalán, Uppsala Univ. (Sweden)
Olivier Wertz, Univ. de Liège (Belgium)
Peter Wizinowich, W. M. Keck Observatory (United States)

Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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