HARMONI at ELT : system analysis and performance estimation of the high-contrast module
In: SPIE conference 2022 ; Adaptive Optics Systems VIII ; https://hal.science/hal-03795935 ; Adaptive Optics Systems VIII, Jul 2022, Montréal, Canada. pp.211, ⟨10.1117/12.2628927⟩, 2022
Online
Konferenz
Zugriff:
International audience ; HARMONI is the first light visible and near-IR integral field spectrograph for the ELT. It covers 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 (including a High Contrast capability) and LTAOor with NOAO. The project is preparing for Final Design Reviews. The high-contrast module (HCM) has been designed to characterize planets as close as 100mas from their host star (goal: 50mas), and presenting a 1e-6 f lux ratio with it. To do so, it will use (1) a passive atmospheric dispersion corrector, (2) a set of amplitude apodizers and focal plane masks to lower the di↵racted intensity next to the star and attenuate the PSF core, (3) a dedicated Zernike wavefront sensor to track the non-common path aberrations with the SCAO subsystem at a 0.1Hz frequency, and (4) post-processing algorithms that will rely on the temporal and spectral diversity of the IFS data to separate the planetary signals from the noise. This communication details several trade-o↵ analyses involved in the co-design of the hardware of the HCM. It also presents contrast performance estimates that have been derived through an analysis of post-processed, simulated IFS data obtained with an end-to-end numerical model of the HCM and the rest of HARMONI. The respective interests of ADI and molecular mapping are compared in this specific case.
Titel: |
HARMONI at ELT : system analysis and performance estimation of the high-contrast module
|
---|---|
Autor/in / Beteiligte Person: | Carlotti, Alexis ; Jocou, Laurent ; Moulin, Thibaut ; Rabou, Patrick ; Bidot, Alexis ; Hours, Adrien ; Magnard, Yves ; Delboulbé, Alain ; Pancher, Fabrice ; Choquet, Élodie ; Vigan, Arthur ; Houllé, Mathis ; Dohlen, Kjetil ; Sauvage, Jean-François ; Fusco, Thierry ; Thatte, Niranjan ; Neichel, Benoît ; Clarke, Fraser ; Melotte, Dave ; Tecza, Matthias ; Schnetler, Hermine ; Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) ; Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-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 ; 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) ; Observatoire de la Côte d'Azur (OCA) ; Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) ; DOTA, ONERA Salon-de-Provence ; ONERA ; DOTA, ONERA, Université Paris Saclay Palaiseau ; Paris-Saclay, ONERA-Université ; ANR-11-LABX-0013,FOCUS,Des détecteurs pour Observer l'Univers(2011) |
Link: | |
Zeitschrift: | SPIE conference 2022 ; Adaptive Optics Systems VIII ; https://hal.science/hal-03795935 ; Adaptive Optics Systems VIII, Jul 2022, Montréal, Canada. pp.211, ⟨10.1117/12.2628927⟩, 2022 |
Veröffentlichung: | HAL CCSD ; SPIE, 2022 |
Medientyp: | Konferenz |
DOI: | 10.1117/12.2628927 |
Schlagwort: |
|
Sonstiges: |
|