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Around the world: status and prospects with the infrared vortex coronagraph (Conference Presentation)

Absil, Olivier and Karlsson, Mikael and Mawet, Dimitri and Carlomagno, Brunella and Christiaens, Valentin and Defrère, Denis and Delacroix, Christian and Girard, Julien and Gomez Gonzalez, Carlos A. and Habraken, Serge and Hinz, Philip and Huby, Elsa and Jolivet, Aissa and Kasper, Markus and Käufl, Hans-Ulrich and Kenworthy, Matthew and Matthews, Keith and Milli, Julien and Orban de Xivry, Gilles and Pantin, Eric and Piron, Pierre and Reggiani, Maddalena and Riggs, A. J. Eldorado and Serabyn, Eugene and Surdej, Jean and Vargas Catalan, Ernesto (2018) Around the world: status and prospects with the infrared vortex coronagraph (Conference Presentation). In: Ground-based and Airborne Instrumentation for Astronomy VII. Proceedings of SPIE. No.10702. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 107020T . ISBN 9781510619579.

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Since its first light at the VLT in 2012, the Annular Groove Phase Mask (AGPM) has been used to implement vortex coronagraphy into AO-assisted infrared cameras at two additional world-leading observatories: the Keck Observatory and the LBT. In this paper, we review the status of these endeavors, and briefly highlight the main scientific results obtained so far. We explore the performance of the AGPM vortex coronagraph as a function of instrumental constraints, and identify the main limitations to the sensitivity to faint, off-axis companions in high-contrast imaging. These limitations include the AGPM itself, non-common path aberrations, as well as the data processing pipeline; we briefly describe our on-going efforts to further improve these various aspects. Based on the lessons learned from the first five years of on-sky exploitation of the AGPM, we are now preparing its implementation in a new generation of high-contrast imaging instruments. We detail the specificities of these instruments, and how they will enable the full potential of vortex coronagraphy to be unleashed in the future. In particular, we explain how the AGPM will be used to hunt for planets in the habitable zone of alpha Centauri A and B with a refurbished, AO-assisted version of the VISIR mid-infrared camera at the VLT (aka the NEAR project), and how this project paves the way towards mid-infrared coronagraphy on the ELT with the METIS instrument. We also discuss future LM-band applications of the AGPM with VLT/ERIS, ELT/METIS, and with a proposed upgrade of Keck/NIRC2, as well as future applications at shorter wavelengths, such as a possible upgrade of VLT/SPHERE with a K-band AGPM.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Absil, Olivier0000-0002-4006-6237
Karlsson, Mikael0000-0002-2011-0851
Mawet, Dimitri0000-0002-8895-4735
Christiaens, Valentin0000-0002-0101-8814
Defrère, Denis0000-0003-3499-2506
Girard, Julien0000-0001-8627-0404
Gomez Gonzalez, Carlos A.0000-0003-2050-1710
Hinz, Philip0000-0002-1954-4564
Kenworthy, Matthew0000-0002-7064-8270
Milli, Julien0000-0001-9325-2511
Orban de Xivry, Gilles0000-0002-4790-415X
Reggiani, Maddalena0000-0003-2911-0898
Riggs, A. J. Eldorado0000-0002-0863-6228
Surdej, Jean0000-0002-7005-1976
Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE).
Group:Astronomy Department
Series Name:Proceedings of SPIE
Issue or Number:10702
Record Number:CaltechAUTHORS:20190823-134013036
Persistent URL:
Official Citation:Olivier Absil, Mikael Karlsson, Dimitri Mawet, Brunella Carlomagno, Valentin Christiaens, Denis Defrère, Christian Delacroix, Julien Girard, Carlos A. Gomez Gonzalez, Serge Habraken, Philip Hinz, Elsa Huby, Aissa Jolivet, Markus Kasper, Hans-Ulrich Kaufl, Matthew Kenworthy, Keith Matthews, Julien Milli, Gilles Orban de Xivry, Eric Pantin, Pierre Piron, Maddalena Reggiani, A.J. Eldorado Riggs, Eugene Serabyn, Jean Surdej, and Ernesto Vargas Catalan "Around the world: status and prospects with the infrared vortex coronagraph (Conference Presentation)", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107020T (9 July 2018);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98180
Deposited By: George Porter
Deposited On:23 Aug 2019 21:36
Last Modified:16 Nov 2021 17:37

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