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Proceedings Paper

Review of small-angle coronagraphic techniques in the wake of ground-based second-generation adaptive optics systems
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Paper Abstract

Small-angle coronagraphy is technically and scientifically appealing because it enables the use of smaller telescopes, allows covering wider wavelength ranges, and potentially increases the yield and completeness of circumstellar environment – exoplanets and disks – detection and characterization campaigns. However, opening up this new parameter space is challenging. Here we will review the four posts of high contrast imaging and their intricate interactions at very small angles (within the first 4 resolution elements from the star). The four posts are: choice of coronagraph, optimized wavefront control, observing strategy, and post-processing methods. After detailing each of the four foundations, we will present the lessons learned from the 10+ years of operations of zeroth and first-generation adaptive optics systems. We will then tentatively show how informative the current integration of second-generation adaptive optics system is, and which lessons can already be drawn from this fresh experience. Then, we will review the current state of the art, by presenting world record contrasts obtained in the framework of technological demonstrations for space-based exoplanet imaging and characterization mission concepts. Finally, we will conclude by emphasizing the importance of the cross-breeding between techniques developed for both ground-based and space-based projects, which is relevant for future high contrast imaging instruments and facilities in space or on the ground.

Paper Details

Date Published: 21 September 2012
PDF: 21 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 844204 (21 September 2012); doi: 10.1117/12.927245
Show Author Affiliations
Dimitri Mawet, European Southern Observatory (Chile)
Jet Propulsion Lab. (United States)
Laurent Pueyo, The Johns Hopkins Univ. (United States)
Peter Lawson, Jet Propulsion Lab. (United States)
Laurent Mugnier, ONERA (France)
Wesley Traub, Jet Propulsion Lab. (United States)
Anthony Boccaletti, LESIA, CNRS, Observatoire de Paris (France)
John T. Trauger, Jet Propulsion Lab. (United States)
Szymon Gladysz, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Eugene Serabyn, Jet Propulsion Lab. (United States)
Julien Milli, European Southern Observatory (Chile)
Institut de Planétologie et d'Astrophysique de Grenoble (France)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Markus Kasper, European Southern Observatory (Germany)
Pierre Baudoz, LESIA, CNRS, Observatoire de Paris (France)
Bruce Macintosh, Lawrence Livermore National Lab. (United States)
Christian Marois, NRC Herzberg Institute of Astrophysics (Canada)
Ben Oppenheimer, American Museum of Natural History (United States)
Harrisson Barrett, College of Optical Sciences, The Univ. of Arizona (United States)
Jean-Luc Beuzit, Institut de Planétologie et d'Astrophysique de Grenoble (France)
Nicolas Devaney, National Univ. of Ireland, Galway (Ireland)
Julien Girard, European Southern Observatory (Chile)
Olivier Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
John Krist, Jet Propulsion Lab. (United States)
Bertrand Mennesson, Jet Propulsion Lab. (United States)
David Mouillet, Institut de Planétologie et d'Astrophysique de Grenoble (France)
Naoshi Murakami, Hokkaido Univ. (Japan)
Lisa Poyneer, Lawrence Livermore National Lab. (United States)
Dmitri Savransky, Lawrence Livermore National Lab. (United States)
Christophe Vérinaud, Institut de Planétologie et d'Astrophysique de Grenoble (France)
James K. Wallace, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 8442:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann, Editor(s)

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