Zobrazeno 1 - 10 of 69 pro vyhledávání: '"F. Patru"'
1
Single-mode waveguides for GRAVITY: I. The cryogenic 4-telescope integrated optics beam combiner
Autor: S. Guieu, F. Patru, C. Scibetta, Sylvestre Lacour, Y. Gambérini, A. Delboulbé, Christian Straubmeier, Guy Perrin, A. Chabli, Laurent Jocou, Stefan Gillessen, Cyprien Lanthermann, E. Stadler, A. Nolot, P. Noël, S. Pocas, Thibaut Moulin, Karine Perraut, G. Chamiot-Maitral, P. Labeye, C. Vizioz, R. Templier, J.-B. Le Bouquin, Wolfgang Brandner, F. Haußmann, Frank Eisenhauer, Pierre Kervella, Oliver Pfuhl, Magdalena Lippa, V. Cardin, Yves Magnard, Marcus Haug, Noel Ventura, António Amorim, F. Joulain, J. Guerrero, S. Poulain, V. Lapras, Jean-Philippe Berger
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 614, pp.A70. ⟨10.1051/0004-6361/201732544⟩
Astronomy and Astrophysics-A&A, 2018, 614, pp.A70. ⟨10.1051/0004-6361/201732544⟩
Astronomy and Astrophysics
Context. Within the framework of the second-generation instrumentation of the Very Large Telescope Interferometer of the European Southern Observatory we have developed the four-telescope beam combiner in integrated optics. Aims. We optimized the per
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b392eb23b5f8e3f8c7066c1b2a63338
https://hal.archives-ouvertes.fr/hal-02304400/file/aa32544-17.pdf
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2
The LBTI Fizeau imager – I. Fundamental gain in high-contrast imaging
Autor: Simone Esposito, Carmelo Arcidiacono, P. M. Hinz, Enrico Pinna, Alfio Puglisi, John M. Hill, J. Antichi, Armando Riccardi, Denis Defrere, F. Patru, Bertrand Mennesson
Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 472 (3), pp.2544-2553. ⟨10.1093/mnras/stx1961⟩
Monthly Notices of the Royal Astronomical Society, 2017, 472 (3), pp.2544-2553. ⟨10.1093/mnras/stx1961⟩
We show by numerical simulations a fundamental gain in contrast when combining coherently monochromatic light from two adaptive optics (AO) telescopes instead of using a single stand-alone AO telescope, assuming efficient control and acquisition syst
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee489622037200262e07bac109ed593a
https://hal-obspm.ccsd.cnrs.fr/obspm-02190924
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3
The LBTI Fizeau imager - II. Sensitivity of the PSF and the MTF to adaptive optics errors and to piston errors
Autor: J. Antichi, P. M. Hinz, Carmelo Arcidiacono, Bertrand Mennesson, Armando Riccardi, John M. Hill, Enrico Pinna, Alfio Puglisi, Simone Esposito, Denis Defrere, F. Patru
Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 472 (3), pp.3288-3297. ⟨10.1093/mnras/stx2016⟩
Monthly Notices of the Royal Astronomical Society, 2017, 472 (3), pp.3288-3297. ⟨10.1093/mnras/stx2016⟩
International audience; We show numerical simulations with monochromatic light in the visible for the LBTI Fizeau imager, including opto-dynamical aberrations due here to adaptive optics (AO) errors and to differential piston fluctuations, while othe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c2818db14b6cfbcbee6ccc28d591b67
http://hdl.handle.net/20.500.12386/29909
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4
Interferometric direct imaging properties of a BIGRE-DAM device in laboratory
Autor: Jacopo Farinato, Denis Mourard, Patrick Rabou, F. Patru, Raffaele Gratton, Jacopo Antichi, Christophe Verinaud, Enrico Giro, Daniele Vassallo, Julien Girard
Publikováno v: SPIE Astronomical Telescopes + Instrumentation
SPIE Astronomical Telescopes + Instrumentation, Aug 2016, Edinburgh, United Kingdom. pp.99072U, ⟨10.1117/12.2233108⟩
DAM (Discretized Aperture Mapping) is an original optical concept able to improve the performance in high angular resolution and high contrast imaging by the present class of large telescopes equipped with adaptive optics. By discretizing the entranc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0295bf8622cab0688d7387543e6f0030
https://doi.org/10.1117/12.2233108
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5
Sensitivity to differential piston and to adaptive optics errors with the Large Binocular Telescope Interferometer
Autor: F. Patru, Enrico Pinna, Carmelo Arcidiacono, Armando Riccardi, Simone Esposito, Alfio Puglisi, John M. Hill, Philip M. Hinz
Publikováno v: SPIE Proceedings.
On-sky adaptive optics wavefront screens have been used and random optical path fluctuations - differential pistons - have been included in numerical simulations for the Large Binocular Telescope Interferometer. We characterize the Point Spread Funct
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d964bafa4613a1fe14e5e8318a0914a1
https://doi.org/10.1117/12.2232086
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7
Fundamental gain in high-contrast imaging with the large binocular telescope interferometer
Autor: Simone Esposito, F. Patru, Carmelo Arcidiacono, John M. Hill, Philip M. Hinz, Armando Riccardi, Enrico Pinna, Alfio Puglisi
Numerical simulations for the Large Binocular Telescope Interferometer have shown a fundamental gain in contrast when using two 8m adaptive optics telescopes instead of one, assuming a high Strehl and a cophasing mode. The global gain is improved by
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc89c5919dbebdbdd42067388969c0e9
http://hdl.handle.net/20.500.12386/24406
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8
VLTI-AMBER velocity-resolved aperture-synthesis imaging of Eta Carinae with a spectral resolution of 12000. Studies of the primary star wind and innermost wind-wind collision
Autor: R. Grellmann, Dieter Schertl, Michael F. Corcoran, Sridharan Rengaswamy, Gerd Weigelt, T. I. Madura, D. J. Hillier, Th. Rivinius, F. Patru, M. Teodoro, Markus Schöller, K. Ohnaka, M. Heininger, S. Guieu, A. Mérand, R. G. Petrov, T. R. Gull, Nicola Clementel, Karl-Heinz Hofmann, A. F. J. Moffat, Stefan Kraus, F. Millour, W. J. de Wit, J. H. Groh, Andrea Mehner, Noel D. Richardson, C. A. Hummel, Augusto Damineli, Markus Wittkowski
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2016, ⟨10.1051/0004-6361/201628832⟩
International audience; Context. The mass loss from massive stars is not understood well. Eta Car is a unique object for studying the massive stellar wind during the LBV phase. It is also an eccentric binary with a period of 5.54 yr. The nature of bo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e1398ed82b1220d3cf97bd3ced6cae2
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9
Wavefront outer scale deduced from interferometric dispersed fringes
Autor: Denis Mourard, Julien Borgnino, Aziz Ziad, Slobodan Jankov, François Martin, D. Bonneau, F. Patru, J. Maire
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2006, 448, pp.1225-1234
Astronomy and Astrophysics-A&A, EDP Sciences, 2006, 448, pp.1225-1234. ⟨10.1051/0004-6361:20052806⟩
In addition to site characterization, measurements of critical atmospheric parameters are required to design and to optimize future adaptive optic systems and long-baseline interferometers. It is possible to estimate seeing conditions by processing d
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::251724865b1c34f454845b3f33215c81
https://doi.org/10.1051/0004-6361:20052806
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10
The measurement bench for the LHC spool corrector magnets in industry
Autor: R. Senis, C. Giloux, Louis Walckiers, S.A. Arshad, A. Arn, F. Patru, H. Reymond
Publikováno v: IEEE Transactions on Appiled Superconductivity. 12:1684-1687
The LHC accelerator will be equipped with more than 3500 superconducting spool corrector magnets. CERN has awarded the contract for the series production and testing of these corrector magnets to industry. Magnetic field measurements are done at the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b26ab7d47da5edfa76720b2fd275a366
https://doi.org/10.1109/tasc.2002.1018731
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