HARMONI at ELT: designing a laser guide star wavefront sensors for the ELT
| العنوان: | HARMONI at ELT: designing a laser guide star wavefront sensors for the ELT |
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| المؤلفون: | Anne Costille, Anne Bonnefoi, Edgard Renault, William Ceria, Kjetil Dohlen, Benoit Neichel, Zoltan Hubert, Jean-Jacques Correia, Thibaut Moulin, Saul Menendez Mendoza, Thierry Fusco, Pascal Vola, Felipe Pedreros, Pierre Jouve, Kacem El Hadi, Santiago Barboza, Rohloff, R. R., Müller, F., Fraser Clarke, Hermine Schnetler, Dave Melotte, Niranjan Thatte |
| المساهمون: | Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Instituto de Astrofisica de Canarias (IAC), DOTA, ONERA, Université Paris Saclay [Palaiseau], ONERA-Université Paris-Saclay, Max Planck Institute for Astronomy (MPIA), University of Oxford, UK Astronomy Technology Centre (UK ATC), Science and Technology Facilities Council (STFC), ONERA, University of Oxford [Oxford] |
| المصدر: | Adaptive Optics Systems VIII Proceedings SPIE Astronomical Telescopes + Instrumentation Proceedings SPIE Astronomical Telescopes + Instrumentation, Jul 2022, Montréal, Canada. ⟨10.1117/12.2627644⟩ HAL Proc. SPIE Adaptive Optics Systems VIII SPIE Astronomical Telescopes + Instrumentation 2022 SPIE Astronomical Telescopes + Instrumentation 2022, Jul 2022, Montréal, Canada |
| بيانات النشر: | HAL CCSD, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], AIT, FOS: Physical sciences, wavefront sensors, LTAO, laser guide star, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], ELT Harmoni, Adaptive Optics, Opto-Mechanics, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM) |
| الوصف: | International audience; HARMONI is the first light visible and near-IR integral field spectrograph for the ELT covering a large spectral range from 450nm to 2450nm with resolving powers from 3500 to 18000 and spatial sampling from 60mas to 4mas. It can operate in two Adaptive Optics modes-SCAO and LTAO-or with no AO. The project is preparing for Final Design Reviews. The laser Tomographic AO (LTAO) system provides AO correction with very high sky-coverage thanks to two systems: the Laser Guide Star Sensors (LGSS) and the Natural Guide Star Sensors (NGSS). LGSS is dedicated to the analysis of the wavefront coming from 6 laser guide stars created by the ELT. It is made of 6 independent wavefront sensor (WFS) modules mounted on a rotator of 600mm diameter to stabilise the pupil onto the microlens array in front of the detector. The optical design accepts elongated spots of up to 16 arcsec with no truncation using a CMOS detector from SONY. We will present the final optical and mechanical design of the LGSS based on freeform lenses to minimize the numbers of optical components and to accommodate for the diversity of sodium layer configurations. We will focus on rotator design, illustrating how we will move 1 tons with 90" accuracy in restrictive environment. Finally, we will present the strategy to verify the system in HARMONI context. The main challenge for the verification being how to test an AO system without access to the deformable mirror, part of the ELT. |
| اللغة: | English |
| ردمك: | 978-1-5106-5351-1 978-1-5106-5352-8 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd11ec1698554e97b01a14ecc742835d https://hal.science/hal-03796060/file/121854L.pdf |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....cd11ec1698554e97b01a14ecc742835d |
| قاعدة البيانات: | OpenAIRE |
| ردمك: | 9781510653511 9781510653528 |
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