HARMONI at ELT: overview of the capabilities and expected performance of the ELT's first light, adaptive optics assisted integral field spectrograph.

Thatte, Niranjan; Melotte, Dave; Neichel, Benoît; Mignant, D. Le; Bryson, Ian; Clarke, Fraser; Ferraro-Wood, Vanessa; Fusco, Thierry; González, Óscar; Schnetler, Hermine; Tecza, Matthias; Wilson, Sandi; Urueña, Alonso Álvarez; Vilaseca, Heribert; Mocoroa, Santiago Arribas; Carballale, Gonzalo José Carracedo; Crespo, Alejandro; Piqueras, Alberto Estrada; García, Miriam García; Martín, Cecilia Martínez; Santaella, M. Pereira; Perna, M.; López, Javier Piqueras; Bouché, Niolas; Boudon, Didier; Daguisé, Eric; Disseau, K.; Fensch, Jérémy; Girardot, Adrien; Guibert, M.; Jarno, Aurélien; Jeanneau, Alexandre; Krogager, Jens-Kristian; Laurent, F; Loupias, M.; Migniau, Jean-Emmanuel; Piquéras, Laure; Remillieux, A.; Richard, Johan; Pécontal, A.; Bardou, Lisa; Barr, David; Cetre, Sylvain; Deshmukh, Rishi; Dimoudi, Sofia; Dubbledam, Marc; Dunn, Andrew K.; Gadotti, Dimitra; Guy, Joss; King, David J.; Little, David; McLeod, Anna F.; Morris, S. L.; Morris, Tim; O’Brien, Kieran; Ronson, Emily; Smith, Russell J.; Staykov, L.; Swinbank, Mark; Townson, Matthew J.; Accardo, M.; Mendez, Domingo Alvarez; George, Elizabeth; Hopgood, Joshua; Ives, Derek; Mehrgan, Leander; Mueller, Eric R.; Reyes-Moreno, Javier; Conzelmann, Ralf; Cheetham, Pablo Gutierrez; Alonso-Sánchez, Ángel; Battaglia, G.; Garcia, Miguel Angel Cagigas; Chulani, Haresh; García, Graciela Delgado; Fernández-Izquierdo, Patricia; López, Ana Belén Fragoso; García-Lorenzo, B.; González, Alberto Hernández; Suárez, Elvio Hernández; Linares, Jose Miguel Herreros; Joven, E.; López, Roberto López; Gonzalez, Alejandro Antonio Lujan; Martín, Yolanda Romano; Mediavilla, E.; Mendoza, Saúl Menéndez; Montoya, Luzma; Castro, José Peñate; Pérez, Álvaro J.; Rasilla, J. L.; Rebolo, R.; Rodríguez-Ramos, L. F.; Moreno, Afrodisio Vega; Viera-Curbelo, T.; Dametto, N. Z.; Carlotti, Alexis; Correia, Jean-Jacques; Curaba, Stéphane; Delboulbé, A.; Guieu, S.; Hours, Adrien; Hubert, Z.; Jocou, L.; Magnard, Y.; Moulin, T.; Pancher, Fabrice; Rabou, Patrick; Stadler, Eric; Vérove, Maxime; Contini, T.; Larrieu, Marie; Olivier, Boebion,; Yan, F.; Lecron, Daniel; Rousseau, Sylvain; Amram, P.; Beltramo-Martin, Olivier; Bon, William; Bonnefoi, Anne; Ceria, William; Challita, Zalpha; Charles, Yannick; Choquet, Élodie; Correia, Carlos; Costille, A.; Dohlen, Kjetil; Ducret, Franck; Hadi, Kacem El; Gach, Jean-Luc; Gimenez, Jean-Luc; Groussin, O.; Jaquet, M.; Jouve, Pierre; Madec, F.; Bustos, Felipe Pedreros; Renault, Edgard; Sanchez, P.; Vigan, A.; Vola, Pascal; Zavago, Annie; Fétick, Romain; Lim, Caroline; Petit, Cyril; Sauvage, Jean-François; Vedrenne, Nicolas; Bagci, Fehim Taha; Caldwell, M.; Elliott, Ellis; Hiscock, Peter; Johnson, Emma C.; Nalagatla, Murali; Seitis, Aristea; Wells, M.R.; Black, Martin; Bond, C.; Brierley, Saskia; Campbell, Kenneth W.; Campbell, Neil; Carruthers, J. N.; Cochrane, William; Evans, C. J.; Harman, Joel; Humphreys, William; Louth, Thomas; Miller, Chris; Montgomery, David; Murali, Meenu; Murray, J. R.; O'Malley, Norman; Sánchéz-Janssen, R.; Schwartz, Noah; Smith, Patrick J.; Strachan, Jonathan; Todd, Stephen; Watt, Stuart; Wells, Martyn; Yaqoob, Asim Ali; Bell, Eric F.; Gnedin, Oleg Y.; Gültekin, Kayhan; Mateo, Mario; Meyer, Michael; Ahmad, Munadi; Birkby, Jayne; Booth, Michael J.; Cappellari, Michele; Dominguez, Edgar Castillo; Ortiz, Jorge C.; Gooding, David; Grisdale, Kearn; Valadez, Andrea Hidalgo; Hogan, L.; Kariuki, J. M.; Lewis, Ian; Lowe, Adam; Ozer, Zeynep; Routledge, Laurence; Rigopoulou, D.; York, Alec

doi:10.1117/12.2628834

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…HARMONI [1] is a near-infrared (NIR) integral field spectrograph dedicated to ESO's Extremely Large Telescope (ELT) which will sit on top of Cerro Armazones. It is composed of five main systems: a Focal Plane Relay System (FPRS) that reimages the ELT focal plane at the entrance of the spectrograph, a Calibration Unit (CALUNIT), a Natural Guide Star System (NGSS) [2], a Laser Guide star System (LGSS) [3], and an Integral field Spectrograph (IFS) with a R=3000-18000 spectral resolution.…”

Section: Introductionmentioning

confidence: 99%

HARMONI at ELT: development of the high-contrast module

Jocou

Rabou

Moulin

et al. 2022

Adaptive Optics Systems VIII

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HARMONI is the first light 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 (AO) modes -Single Conjugated AO (SCAO -including a High-Contrast capability) and Laser Tomography AO (LTAO) -or without AO (NOAO). The project is preparing for Final Design Reviews. In addition of the SCAO mode, the instrument includes a high-contrast imaging capability working in H and K band. This sub-system will be essential to spectrally characterize young giant exoplanets with contrast down to 1e -6 and a separation from 0.1 to 0.3 arc second (goal: 0.05-0.3'') from their host star. It will also be used to characterize young circumstellar disks. The High-Contrast Module (HCM) is based on an apodized pupil coronagraph which lowers the intensity of the diffracted starlight to a planet-star contrast compatible with the dynamic range of the scientific detector. A dedicated Zernike wavefront sensor will internally calibrate non-common path aberrations at a 0.1Hz rate. This paper therefore recalls the driver requirements before describing the optical, mechanical and control system designs. We then shortly describe the operation of the HCM. Section 3 addresses the main aspects of the system analysis while the last section is dedicated to the AIT aspects.

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Section: Introductionmentioning

confidence: 99%

HARMONI at ELT: development of the high-contrast module

Jocou

Rabou

Moulin

et al. 2022

Adaptive Optics Systems VIII

Self Cite

View full text Add to dashboard Cite

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“…HARMONI [1], [2] is a visible and near-infrared integral field spectrograph providing the ELT's core spectroscopic capability. It uses image slicers to provide spectra for each one of its 204x152 spaxels covering a single contiguous field.…”

Section: Introductionmentioning

confidence: 99%

HARMONI at ELT: Towards a final design for the natural guide star sensors system

Dohlen

Vola

Challita

et al. 2022

Modeling, Systems Engineering, and Project Management for Astronomy X

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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 LTAO -or with NOAO. The project is preparing for final design review (FDR).The Natural Guide Star Sensors (NGSS) system of HARMONI provides wavefront and image stabilisation sensing for each of the four observing modes of the instrument, LTAO, SCAO, HCAO, and NOAO. It consists of five subsystems, three of which provide wavefront sensing (LOWFS, SCAOS and HCM), the remaining two (ESE and ISB) providing thermal and mechanical functions. To limit thermal background and to ensure the required stability, the sensors operate in a cold, thermally stabilized, dry gas environment. This paper presents the overall design of the system with emphasis on system analysis, assembly and test, and maintenance.

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“…HARMONI [1] is a visible and near-infrared integral field spectrograph providing the ELT's core spectroscopic capability. It will exploit the ELT's scientific niche in its early years, starting at first light.…”

Section: Introductionmentioning

confidence: 99%

HARMONI at ELT: a telescope simulator for laser tomographic AO

Salvy

Dohlen

Jouve

et al. 2022

Adaptive Optics Systems VIII

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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 LTAO -or with NOAO. The project is preparing for Final Design Reviews. The AO wavefront sensor modules are assembled and tested in Marseille, requiring a large telescope simulator for realistic projection of various guide objects into the system. This is particularly challenging for the six laser guide stars, whose partially overlapping beams converge to a focus several meters behind the instrument entrance focus. To avoid building a well-corrected, meter-sized, optical system for this task, a single large lens is employed, associated with source modules individually equipped with spatial light modulators (SLM) capable both of simulating the atmosphere and the telescope's deformable mirror (M4) and of compensating the aberrations inherent to the simple simulator optics. In this paper, we present preliminary optical designs for the telescope simulator and the source units. We also describe prototype work, associated with theoretical analysis, to demonstrate the SLM's capabilities for generating sufficiently large aberrations.

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HARMONI at ELT: overview of the capabilities and expected performance of the ELT's first light, adaptive optics assisted integral field spectrograph.

Cited by 9 publications

References 6 publications

HARMONI at ELT: development of the high-contrast module

HARMONI at ELT: development of the high-contrast module

HARMONI at ELT: Towards a final design for the natural guide star sensors system

HARMONI at ELT: a telescope simulator for laser tomographic AO

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