9 August 2016 Three years of harvest with the vector vortex coronagraph in the thermal infrared
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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.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Olivier Absil, Olivier Absil, Dimitri Mawet, Dimitri Mawet, Mikael Karlsson, Mikael Karlsson, Brunella Carlomagno, Brunella Carlomagno, Valentin Christiaens, Valentin Christiaens, Denis Defrère, Denis Defrère, Christian Delacroix, Christian Delacroix, Bruno Femenía Castella, Bruno Femenía Castella, Pontus Forsberg, Pontus Forsberg, Julien Girard, Julien Girard, Carlos A. Gómez González, Carlos A. Gómez González, Serge Habraken, Serge Habraken, Philip M. Hinz, Philip M. Hinz, Elsa Huby, Elsa Huby, Aïssa Jolivet, Aïssa Jolivet, Keith Matthews, Keith Matthews, Julien Milli, Julien Milli, Gilles Orban de Xivry, Gilles Orban de Xivry, Eric Pantin, Eric Pantin, Pierre Piron, Pierre Piron, Maddalena Reggiani, Maddalena Reggiani, Garreth J. Ruane, Garreth J. Ruane, Gene Serabyn, Gene Serabyn, Jean Surdej, Jean Surdej, Konrad R. W. Tristram, Konrad R. W. Tristram, Ernesto Vargas Catalán, Ernesto Vargas Catalán, Olivier Wertz, Olivier Wertz, Peter Wizinowich, Peter Wizinowich, } "Three years of harvest with the vector vortex coronagraph in the thermal infrared", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99080Q (9 August 2016); doi: 10.1117/12.2233289; https://doi.org/10.1117/12.2233289
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