Journal ArticleDOI
Pupil plane wavefront sensing with an oscillating prism
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In this paper, a pupil plane wavefront sensor is described, which is able to image on a single detector four images of the pupil, containing information on the gradient of the incoming wavefront.Abstract:
A compact pupil plane wavefront sensor is described, which is able to image on a single detector four images of the pupil, containing information on the gradient of the incoming wavefront. The wavefront sensor consists of a lens relay and an oscillating pyramidal-shaped prism. The gain of the device is driven by the amplitude of the oscillations, while the sampling is determined by the focal length of the lens relay. This wavefront sensor can be conveniently used for astronomical adaptive optics purposes because of its flexibility to match the brightness of the reference source used (varying the sampling) and the seeing conditions (varying the gain).read more
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The Exoplanet Handbook
TL;DR: In this paper, the authors present an overview of the solar system and its evolution, including the formation and evolution of stars, asteroids, and free-floating planets, as well as their internal and external structures.
Journal ArticleDOI
Adaptive Optics for Astronomy
R. I. Davies,Markus Kasper +1 more
TL;DR: It is shown that adaptive optics has led to important advances in the authors' understanding of a multitude of astrophysical processes, and how the requirements from science applications are now driving the development of the next generation of novel adaptive optics techniques.
Journal ArticleDOI
SPHERE: the exoplanet imager for the Very Large Telescope
Jean-Luc Beuzit,Arthur Vigan,David Mouillet,Kjetil Dohlen,Raffaele Gratton,Anthony Boccaletti,Jean-François Sauvage,H. M. Schmid,Maud Langlois,Cyril Petit,Andrea Baruffolo,M. Feldt,Julien Milli,Zahed Wahhaj,L. Abe,U. Anselmi,J. Antichi,Rudy Barette,J. Baudrand,Pierre Baudoz,Andreas Bazzon,P. Bernardi,P. Blanchard,R. Brast,Pietro Bruno,Tristan Buey,Marcel Carbillet,M. Carle,Enrico Cascone,F. Chapron,Gael Chauvin,Julien Charton,Riccardo Claudi,Anne Costille,V. De Caprio,A. Delboulbe,Silvano Desidera,Carsten Dominik,Mark Downing,O. Dupuis,Christophe Fabron,D. Fantinel,G. Farisato,Philippe Feautrier,Enrico Fedrigo,T. Fusco,P. Gigan,Christian Ginski,Julien Girard,Enrico Giro,D. Gisler,L. Gluck,Cecile Gry,Th. Henning,N. Hubin,Emmanuel Hugot,S. Incorvaia,M. Jaquet,M. Kasper,Eric Lagadec,Anne-Marie Lagrange,H. Le Coroller,D. Le Mignant,B. Le Ruyet,G. Lessio,J. L. Lizon,M. Llored,Lars Lundin,F. Madec,Yves Magnard,M. Marteaud,P. Martinez,D. Maurel,Francois Menard,Dino Mesa,O. Möller-Nilsson,Thibaut Moulin,C. Moutou,Alain Origne,J. Parisot,A. Pavlov,D. Perret,J. Pragt,Pascal Puget,Patrick Rabou,Juan-Luis Ramos,Jean Michel Reess,F. Rigal,Sylvain Rochat,Ronald Roelfsema,G. Rousset,A. Roux,Michel Saisse,Bernardo Salasnich,E. Sant'Ambrogio,Salvo Scuderi,D. Segransan,Arnaud Sevin,Ralf Siebenmorgen,Christian Soenke,Eric Stadler,Marcos Suarez,Didier Tiphene,Massimo Turatto,Stéphane Udry,Farrokh Vakili,L. B. F. M. Waters,L. Weber,Francois Wildi,Gérard Zins,Alice Zurlo +110 more
TL;DR: The Spectro-Polarimetic High contrast imager for Exoplanets REsearch (SPHERE) was designed and built for the ESO Very Large Telescope (VLT) in Chile as mentioned in this paper.
Journal ArticleDOI
SPHERE: the exoplanet imager for the Very Large Telescope
Jean-Luc Beuzit,Jean-Luc Beuzit,Arthur Vigan,David Mouillet,Kjetil Dohlen,Raffaele Gratton,Anthony Boccaletti,Jean-François Sauvage,Jean-François Sauvage,H. M. Schmid,Maud Langlois,Maud Langlois,Cyril Petit,Andrea Baruffolo,M. Feldt,Julien Milli,Zahed Wahhaj,L. Abe,U. Anselmi,Jacopo Antichi,Rudy Barette,J. Baudrand,Pierre Baudoz,Andreas Bazzon,P. Bernardi,P. Blanchard,R. Brast,Pietro Bruno,Tristan Buey,Marcel Carbillet,M. Carle,Enrico Cascone,F. Chapron,Julien Charton,Gael Chauvin,Gael Chauvin,Riccardo Claudi,Anne Costille,V. De Caprio,J. de Boer,A. Delboulbe,Silvano Desidera,Carsten Dominik,Mark Downing,O. Dupuis,Christophe Fabron,Daniela Fantinel,G. Farisato,Philippe Feautrier,Enrico Fedrigo,Thierry Fusco,Thierry Fusco,P. Gigan,Christian Ginski,Christian Ginski,Julien Girard,Julien Girard,Enrico Giro,D. Gisler,L. Gluck,Cecile Gry,Th. Henning,Norbert Hubin,Emmanuel Hugot,S. Incorvaia,M. Jaquet,M. Kasper,Eric Lagadec,Anne-Marie Lagrange,H. Le Coroller,D. Le Mignant,B. Le Ruyet,G. Lessio,J. L. Lizon,M. Llored,Lars Lundin,F. Madec,Yves Magnard,M. Marteaud,Patrice Martinez,D. Maurel,Francois Menard,Dino Mesa,O. Möller-Nilsson,Thibaut Moulin,C. Moutou,Alain Origne,J. Parisot,A. Pavlov,D. Perret,J. Pragt,Pascal Puget,P. Rabou,Joany Andreina Manjarres Ramos,J.-M. Reess,F. Rigal,S. Rochat,Ronald Roelfsema,Gérard Rousset,A. Roux,Michel Saisse,Bernardo Salasnich,E. Sant'Ambrogio,Salvo Scuderi,Damien Ségransan,Arnaud Sevin,Ralf Siebenmorgen,Christian Soenke,Eric Stadler,Marcos Suarez,D. Tiphène,Massimo Turatto,Stéphane Udry,Farrokh Vakili,L. B. F. M. Waters,L. B. F. M. Waters,L. Weber,Francois Wildi,Gérard Zins,Alice Zurlo,Alice Zurlo +120 more
TL;DR: The Spectro-Polarimetic High contrast imager for Exoplanets REsearch (SPHERE) was designed and built for the ESO Very Large Telescope (VLT) in Chile as discussed by the authors.
Proceedings ArticleDOI
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII
Abstract: The Kepler spacecraft launched on March 7, 2009, initiating NASA’s first search for Earth-size planets orbiting Sun-like stars. Since launch, Kepler has announced the discovery of 17 exoplanets, including a system of six transiting a Sun-like star, Kepler-11, and the first confirmed rocky planet, Kepler-10b, with a radius of 1.4 that of Earth. Kepler is proving to be a cornucopia of discoveries: it has identified over 1200 candidate planets based on the first 120 days of observations, including 54 that are in or near the habitable zone of their stars, and 68 that are 1.2 Earth radii or smaller. An astounding 408 of these planetary candidates are found in 170 multiple systems, demonstrating the compactness and flatness of planetary systems composed of small planets. Never before has there been a photometer capable of reaching a precision near 20 ppm in 6.5 hours and capable of conducting nearly continuous and uninterrupted observations for months to years. In addition to exoplanets, Kepler is providing a wealth of astrophysics, and is revolutionizing the field of asteroseismology. Designing and building the Kepler photometer and the software systems that process and analyze the resulting data to make the discoveries presented a daunting set of challenges, including how to manage the large data volume. The challenges continue into flight operations, as the photometer is sensitive to its thermal environment, complicating the task of detecting 84 ppm drops in brightness corresponding to Earth-size planets transiting Sun-like stars.
References
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Journal ArticleDOI
A simple low-order adaptive optics system for near-infrared applications
TL;DR: In this paper, a novel approach to wavefront sensing and compensation is described, which is optimized for low-order correction and high efficiency, and computer-simulation results show it can achieve the desired performance.
Journal ArticleDOI
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Phase image differentiation with linear intensity output
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