Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Samuel Lévêque"'
Autor:
Samuel Lévêque
Publikováno v:
Transcr(é)ation. 2:1-16
Si la longue histoire des mangas et de l’animation japonaise débutent au début du XXe siècle, l’industrie du manga en tant que telle n’émerge qu’après la Seconde Guerre Mondiale, dans le cadre de la reconstruction du pays. La renaissance
Publikováno v:
Adaptive Optics Systems VIII.
Autor:
Gaizka Murga, Alexander Díaz, Rubén Sanquirce, Santiago Royo, Carles Pizarro, Maialen González, Elena Lara, Borja Vega, Noel Rodrigo, Pau Santos, Andreas Förster, Sebastian Schmid, Samuel Lévêque, Philippe Gitton, Giorgio Filippi
The ELT M1 Local Coherencer is a non-contact metrology system aimed to simultaneously measure the relative pistons on the six sides of a target M1 segment with respect to neighboring ones (reference segments) with an accuracy below 300nm in a range o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93c99439f7d9cfcb274185e6db1ee306
https://hdl.handle.net/2117/386073
https://hdl.handle.net/2117/386073
Autor:
Samuel Lévêque, Pierre Janin-Potiron, Ronald Holzlöhner, Thierry Fusco, Victoria F. Wallauer, Benoit Neichel, Aglae Kellerer, Vincent Chambouleyron
Publikováno v:
Adaptive Optics Systems VII.
We demonstrate numerically the phasing of a telescope with a primary segmented mirror consisting of 800 hexagonal segments using a pyramid wavefront sensor, supported by experiments. The segments are initially misaligned in piston/tip/tilt with media
Publikováno v:
Optics Express
Optics Express, Optical Society of America-OSA Publishing, 2020, 28 (9), pp.12566. ⟨10.1364/OE.390576⟩
Optics Express, Optical Society of America-OSA Publishing, 2020, ⟨10.1364/OE.390576⟩
Optics Express, 2020, 28 (9), pp.12566. ⟨10.1364/OE.390576⟩
Optics Express, 2020, ⟨10.1364/OE.390576⟩
Optics Express, Optical Society of America-OSA Publishing, 2020, 28 (9), pp.12566. ⟨10.1364/OE.390576⟩
Optics Express, Optical Society of America-OSA Publishing, 2020, ⟨10.1364/OE.390576⟩
Optics Express, 2020, 28 (9), pp.12566. ⟨10.1364/OE.390576⟩
Optics Express, 2020, ⟨10.1364/OE.390576⟩
The demand for higher resolution telescopes leads to segmented primary mirrors which need to be phased for operation. A phasing sensor applying a wavelength sweep technique provides a large capture range without modulating the position of individual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df97e23aaa4947635876b088f416cd19
https://hal.archives-ouvertes.fr/hal-02543263/file/WavelengthSweepWithPhasecontrastOSAunivtemplate(4).pdf
https://hal.archives-ouvertes.fr/hal-02543263/file/WavelengthSweepWithPhasecontrastOSAunivtemplate(4).pdf
Autor:
Nicola Di Lieto, Juan-Antonio Marrero Hernández, Samuel Lévêque, Andrew Rakich, Ronald Holzlöhner
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III.
We measured the influence functions of a 9-actuator warping harness of an ELT primary mirror segment prototype using a fiber interferometer. The compact setup consists of a stiff, lightweighted aluminium plate with a similar diameter as the segment (
Autor:
Pierre van der Heyden, Roberto Abuter, Thibaut Guerlet, Andreas Glindemann, Yves Magnard, Frédéric Gonté, Andreas Haimerl, Andres Pino, Nicolas Schuhler, Richard Tamblay, Alexander Meister, Xavier Haubois, Pierre Haguenauer, Frederic Derie, Stefan Huber, Christian Stephan, Isabelle Percheron, Sébastien Poupar, Angela Cortes, Javier Reyes, F. Delplancke-Ströbele, J. Quentin, Roderick Dembet, Marcos Suarez, Julien Woillez, A. Ramirez, Christophe Verinaud, Mario Tapia, Luca Pasquini, Jean-Baptiste Le Bouquin, J. P. Kirchbauer, Emmanuel Aller-Carpentier, Pierre Bourget, R. Brast, José Antonio Abad, S. Rochat, Eloy Fuenteseca, Ralf Conzelmann, S. Guieu, A. Delboulbe, Pablo Barriga, Marcus Pavez, R. Frahm, Jean-Philippe Berger, Guillermo Valdes, Diego Del Valle, Sebastien Egner, Pascaline Darré, Antoine Mérand, R. Ridings, Christophe Dupuy, Lorenzo Pettazzi, Luigi Andolfato, Jerome Paufique, Lieselotte Jochum, Thomas Rivinius, Daniel Gaytan, Paul Bristow, Jean Francois Pirard, Pedro Mardones, Paul Jolley, Reinaldo Donoso, Fernando Salgado, Samuel Lévêque, Johann Kolb, Peter Krempl, Philippe Duhoux, Juan Osorio, Stephane Guisard, Gérard Zins, Willem-Jan de Wit, Jürgen Ott, Pavel Shchekaturov, Thibaut Moulin, Paul Lilley, Jean Louis Lizon, Laurent Pallanca, Andreas Förster, Norbert Hubin, Thanh Phan Duc, Johan Kosmalski, Markus Schöller, Luis Caniguante, Konrad R. W. Tristram, Jaime Alonso, Pablo Gutierrez, J. Beltran, Laurent Jocou, Jaime Gonzales
Publikováno v:
Optical and Infrared Interferometry and Imaging VI.
The near-infrared GRAVITY instrument has become a fully operational spectro-imager, while expanding its capability to support astrometry of the key Galactic Centre science. The mid-infrared MATISSE instrument has just arrived on Paranal and is starti
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
Autor:
Andreas Foerster, Samuel Lévêque, Lorenzo Pettazzi, Frédéric Gonté, Nick Kornweibel, Lieselotte Jochum, C. Lucuix, M. Dimmler, J. C. Gonzalez, Marc Cayrel, Frederic Derie, Pablo Barriga
Publikováno v:
Ground-based and Airborne Telescopes VII.
In the last years the ELT Program has entered construction phase. For the large 39 meter segmented primary mirror unit with thousands of components this means that the start of the series production is getting closer, where the final hardware will be
Autor:
Jean-François Sauvage, Emmanuel Hugot, Kjetil Dohlen, Anne-Laure Cheffot, Arthur Vigan, Lothar Noethe, Samuel Lévêque
Publikováno v:
Ground-based and Airborne Telescopes VII
Ground-based and Airborne Telescopes VII, Jun 2018, Austin, France. pp.227, ⟨10.1117/12.2311659⟩
Ground-based and Airborne Telescopes VII, Jun 2018, Austin, France. pp.227, ⟨10.1117/12.2311659⟩
International audience; The next generation of extremely large telescopes requires the use of segmented mirrors. This technology needs specific wave front sensors to measure the alignment and phasing state. This paper compares two specific technologi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f056155a414c4354e9cfa0ba0d7c7cba
https://hal.science/hal-02118130
https://hal.science/hal-02118130