Zobrazeno 1 - 10 of 50 pro vyhledávání: '"Henri Bonnet"'
1
Infrared wavefront sensing for adaptive optics assisted galactic center observations with GRAVITY
Autor: Julien Woillez, Gérard Zins, Johann Kolb, F. Delplancke-Ströbele, Wolfgang Brandner, Frank Eisenhauer, Casey Deen, Henri Bonnet, Silvia Scheithauer, Peter Bizenberger, Gert Finger, Eric Müller, Johana Panduro, Stefan Hippler, Laurent Pallanca, Z. Hubert, Martin Kulas
Publikováno v: Adaptive Optics Systems VII.
We describe the operation of the infrared wavefront sensing based Adaptive Optics system CIAO. The Coude Infrared Adaptive Optics (CIAO) system is a central auxiliary component of the Very Large Telescope interferometer (VLTI). It enables in particul
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::310eb7f1866dd248c8e55e8ea5c0a2d5
https://doi.org/10.1117/12.2560222
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2
The GRAVITY Young Stellar Object survey I. Probing the disks of Herbig Ae/Be stars in terrestrial orbits
Autor: S. Yazici, Oliver Pfuhl, Thomas Henning, J. Bouvier, Stefan Hippler, V. Coudé du Foresto, Thomas Ott, J. Sanchez-Bermudez, Lucas Labadie, E. F. van Dishoeck, Myriam Benisty, Sebastian Rabien, Stefan Gillessen, Frank Eisenhauer, Frederic H. Vincent, A. Caratti o Garatti, Karine Perraut, Chien-Cheng Lin, Laurent Jocou, Andreas Eckart, Jaime E. Pineda, Matthew Horrobin, Christian Straubmeier, Roberto Abuter, Idel Waisberg, Feng Gao, L. Klarmann, Catherine Dougados, Imke Wank, Antoine Mérand, C. Rau, Gérard Rousset, Felix Widmann, Sarah Kendrew, Guy Perrin, A. Buron, P. T. de Zeeuw, Thomas P. Ray, R. Grellmann, Wolfgang Brandner, António Amorim, Bernard Lazareff, Dominique Segura-Cox, Paulo Gordo, Erich Wiezorrek, Henri Bonnet, F. Eupen, Eric Gendron, F. Haussmann, M. Koutoulaki, Yann Clénet, Silvia Scheithauer, Xavier Haubois, Paola Caselli, M. Wiest, Paulo J. V. Garcia, Gilles Duvert, Reinhard Genzel, Julien Woillez, Thibaut Paumard, E. Sturm, Jason Dexter, Jean-Philippe Berger, Z. Hubert, Sylvestre Lacour, Odele Straub, J.-B. Le Bouquin, Pierre Léna, R. Garcia-Lopez, Ekkehard Wieprecht, Pierre Kervella, Faustine Cantalloube
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 632, pp.A53. ⟨10.1051/0004-6361/201936403⟩
Astronomy and Astrophysics (0004-6361), 632, A53
Astronomy and Astrophysics (0004-6361)
The formation and the evolution of protoplanetary disks are important stages in the lifetime of stars. The processes of disk evolution and planet formation are intrinsically linked. We spatially resolve with GRAVITY/VLTI in the K-band the sub au-scal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdd97ffd81be8165658d481bcc3dfcba
https://hal.archives-ouvertes.fr/hal-03012529
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3
A geometric distance measurement to the Galactic Center black hole with 0.3% uncertainty
Autor: Idel Waisberg, Thibaut Paumard, Julien Woillez, Jason Dexter, Oliver Pfuhl, Stefan Gillessen, Thomas Henning, Senol Yazici, Matthew Horrobin, Stefan Hippler, Christian Straubmeier, Karine Perraut, Odele Straub, J.-B. Le Bouquin, Sebastian Rabien, Amiel Sternberg, F. Vincent, António Amorim, Laurent Jocou, Vincent Lapeyrere, Reinhard Genzel, V. Coudé du Foresto, Feng Gao, Xavier Haubois, Gilles Duvert, Ekkehard Wieprecht, Jean-Philippe Berger, Paulo J. V. Garcia, Maryam Habibi, Thomas Ott, A. Jiménez-Rosales, Ortwin Gerhard, S. von Fellenberg, Linda J. Tacconi, G. Rousset, Eric Gendron, Guy Perrin, Pierre Kervella, Frank Eisenhauer, G. Rodriguez Coira, R. Abuter, Felix Widmann, Pierre Léna, Eckhard Sturm, Silvia Scheithauer, N. M. Förster Schreiber, Erich Wiezorrek, Henri Bonnet, Andreas Eckart, M. Bauböck, Sylvestre Lacour, Yann Clénet, P. T. de Zeeuw, Wolfgang Brandner
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 625, pp.L10. ⟨10.1051/0004-6361/201935656⟩
Astronomy and Astrophysics (0004-6361)
Astronomy and Astrophysics (0004-6361), 625, L10
We present a 0.16% precise and 0.27% accurate determination of R0, the distance to the Galactic Center. Our measurement uses the star S2 on its 16-year orbit around the massive black hole Sgr A* that we followed astrometrically and spectroscopically
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d085bb8c58d86e650fa04f42aa92e075
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4
Adaptive optics at the ESO ELT
Autor: Christophe Verinaud, E. Vernet, Enrico Marchetti, Lorenzo Pettazzi, Pierre-Yves Madec, Miska Le Louarn, Michael Esselborn, M. Müller, Jerome Paufique, Fabio Biancat-Marchet, M. Dimmler, Sylvain Oberti, B. Sedghi, Nick Kornweibel, Henri Bonnet, Jason Spyromilio, Stefan Stroebele
Publikováno v: Adaptive Optics Systems VI.
The construction of a diffraction limitable telescope as large as the ESO’s ELT is enabled by its embedded deformable quaternary mirror. Besides its essential function in the telescope control, M4 also contributes to compensating the free atmospher
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::656648e9d6f02c8d9959cb47eb98c80f
https://doi.org/10.1117/12.2312407
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5
MELT: an optomechanical emulation testbench for ELT wavefront control and phasing strategy
Autor: Samuel Lévêque, Nick Kornweibel, Henri Bonnet, P. La Penna, A.-L. Cheffot, I. Guidolin, C. Frank, Steffan Lewis, J. Kosmalski, Thomas Pfrommer, Jason Spyromilio
Publikováno v: Ground-based and Airborne Telescopes VII.
We present an optomechanical test bench setup (MELT) for testing and validating key functionalities to be used on the Extremely Large Telescope (ELT) during the periods of system verification, wavefront control commissioning, through the handover to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ecf776ce8df7ce39f38b5a2fe3c7e73a
https://doi.org/10.1117/12.2313537
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6
Rejecting harmonic vibrations at Gemini with real-time vibration tracking
Autor: Thomas L. Hayward, Chadwick A. Trujillo, Steve Hardash, Neal Masuda, Mathew J. Rippa, Tom Cumming, Henri Bonnet, Cy Bagano, Chris Yamasaki, Chas Cavedoni
Publikováno v: SPIE Proceedings.
Fighting vibrations on large telescopes is an arduous task. At Gemini, vibrations originating from cryogenic coolers have been shown to degrade the optical wavefront, in certain cases by as much as 40%. This paper discusses a general solution to vibr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::175231b2570122f4ab1c0e1ce0bc43f2
https://doi.org/10.1117/12.2231782
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7
VLT interferometer upgrade for the 2nd generation of interferometric instruments
Autor: Richard Tamblay, Waldo Siclari, J. Beltran, Pierre Bourget, Philippe Duhoux, Volker Heinz, Juan Pablo Henriquez, Roberto Castillo, P. Antonelli, Juan Carlos Pineda, Norbert Hubin, Jean-Francois Pirard, Laurent Pallanca, Luca Pasquini, Fernando Luco, Ruben Fernandez, Margarita Acuña, Angel Mellado, Andreas Haimerl, Christian Schmid, F. Allouche, Jaime Alonso, R. Brast, Alvaro Diaz, Isabelle Percheron, M. Riquelme, Andres Pino, Felix Rozas, Samuel Lévêque, Francoise Delplancke, Eloy Fuenteseca, Rodrigo Huerta, Daniel Gaytan, C. Reinero, Gérard Zins, Paul Bristow, Christophe Dupuy, Ralf Conzelmann, Roberto Abuter, Konrad R. W. Tristram, Gerardo Avila, Frederic Derie, Jaime Gonzales, Frank Eisenhauer, Henri Bonnet, Sébastien Poupar, Juan Romero, Pedro Mardones, Pierre Haguenauer, Reinaldo Donoso, Andreas Glindemann, Luis Caniguante, José Antonio Abad, Luigi Andolfalto, Carlos Bolados, Alfredo Leiva, P. van der Heyden, Thomas Rivinius, Marcus Pavez, Chester Rojas, Antoine Mérand, Diego Del Valle, Willem-Jan de Wit, Juan Osorio, Silvia Scheithauer, A. Ramirez, Jürgen Ott, Markus Schöller, Sebastian Egner, Christian Stephan, Frédéric Gonté, Christian Elao, Lieselotte Jochum, Fernando Salgado, Stephane Guisard, Andrew A. Wright, Julien Woillez, Duc Than Phan, Jean-Philippe Berger, Jean-Louis Lizon, Angela Cortes, S. Guieu, Pablo Barriga, Guillermo Valdes, Sergio Abadie, Mario Tapia, Nicolas Schuhler, Reinhold J. Dorn
Publikováno v: SPIE Proceedings.
ESO is undertaking a large upgrade of the infrastructure on Cerro Paranal in order to integrate the 2nd generation of interferometric instruments Gravity and MATISSE, and increase its performance. This upgrade started mid 2014 with the construction o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ddf085682adb3b1621b5763123f86c36
https://doi.org/10.1117/12.2233350
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8
Simulations of E-ELT telescope effects on AO system performance
Autor: Michael Esselborn, Miska Le Louarn, Enrico Marchetti, Pierre-Yves Madec, Henri Bonnet
Publikováno v: Adaptive Optics Systems V.
We study the impact of various telescope effects (like effect of phasing errors, missing segments, etc) on the performance of SCAO systems. This paper is using the E-ELT with 798 primary mirror segments. For example, we will show what kind of AO syst
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6965e506717d57a93a01309479609a6b
https://doi.org/10.1117/12.2232287
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9
Extracting the scalloping error from closed loop AO data
Autor: Henri Bonnet, Miska Le Louarn, Pierre-Yves Madec, Enrico Marchetti, Michael Esselborn
Publikováno v: SPIE Proceedings.
In this paper, we present an algorithm and supporting simulations results showing how a single conjugated AO system can be used to detect a scalloping error occurring in the telescope. We show that when the scalloping error modes are entered in the r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7d9bc58145dbdd53ef4d635dac80f10
https://doi.org/10.1117/12.2202718
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