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L'-band AGPM vector vortex coronagraph's first light on LBTI/LMIRCam
Defrere, Denis; Absil, Olivier; Hinz, P. et al.
2014In Proceedings of SPIE: The International Society for Optical Engineering, p. 91483
 

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Keywords :
adaptive optics; LBT; vortex phase mask; coronagraphy; HR8799
Abstract :
[en] We present the first observations obtained with the L'-band AGPM vortex coronagraph recently installed on LBTI/LMIRCam. The AGPM (Annular Groove Phase Mask) is a vector vortex coronagraph made from diamond subwavelength gratings. It is designed to improve the sensitivity and dynamic range of high-resolution imaging at very small inner working angles, down to 0.09 arcseconds in the case of LBTI/LMIRCam in the L' band. During the first hours on sky, we observed the young A5V star HR8799 with the goal to demonstrate the AGPM performance and assess its relevance for the ongoing LBTI planet survey (LEECH). Preliminary analyses of the data reveal the four known planets clearly at high SNR and provide unprecedented sensitivity limits in the inner planetary system (down to the diffraction limit of 0.09 arcseconds). © 2014 SPIE.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Defrere, Denis ;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Absil, Olivier  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Hinz, P.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Kuhn, J.;  Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, United States
Mawet, D.;  European Southern Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile
Mennesson, B.;  Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, United States
Skemer, A.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Wallace, K.;  Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, United States
Bailey, V.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Downey, E.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Delacroix, Christian  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Durney, O.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Forsberg, P.;  Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, Uppsala, Sweden
Gómez González, Carlos ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Habraken, Serge  ;  Université de Liège > Département de physique > Optique - Hololab
Hoffmann, W. F.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Karlsson, M.;  Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, Uppsala, Sweden
Kenworthy, M.;  Leiden Observatory, Niels Bohrweg 2, Leiden, Netherlands
Leisenring, J.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Montoya, M.;  Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, United States
Pueyo, L.;  Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, United States
Skrutskie, M.;  University of Virginia, Department of Astronomy, 530 McCormick Road, Charlottesville, VA, United States
Surdej, Jean  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Veran, J.-P.
Marchetti, E.
Close, L. M.
More authors (16 more) Less
Language :
English
Title :
L'-band AGPM vector vortex coronagraph's first light on LBTI/LMIRCam
Publication date :
21 July 2014
Event name :
SPIE Astronomical Telescopes and Instrumentation 2014
Event organizer :
SPIE
Event place :
Montreal, Canada
Event date :
22/6/2014 - 28/6/2014
Audience :
International
Journal title :
Proceedings of SPIE: The International Society for Optical Engineering
ISSN :
0277-786X
eISSN :
1996-756X
Publisher :
SPIE, Bellingham, United States - Washington
Pages :
91483X
European Projects :
FP7 - 337569 - VORTEX - Taking extrasolar planet imaging to a new level with vector vortex coronagraphy
Name of the research project :
VORTEX
Funders :
CE - Commission Européenne [BE]
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