HARMONI: first light spectroscopy for the ELT: instrument final design and quantitative performance predictions

Thatte, Niranjan; Bryson, Ian; Clarke, Fraser; Ferraro-Wood, Vanessa; Fusco, Thierry; Mignant, D. Le; Melotte, Dave; Neichel, Benoît; Schnetler, Hermine; Tecza, Matthias; Arribas, S.; Crespo, Alejandro; Piqueras, Alberto Estrada; García, Miriam García; Pereira-Santaella, M.; López, Javier Piqueras; Blaizot, Jérémy; Bouché, Nicholas; Boudon, Didier; Chapuis, Diane; Daguisé, Eric; Disseau, K.; Guibert, M.; Jarno, Aurélien; Jeanneau, Alexandre; Laurent, Florence; Loupias, M.; Migniau, Jean-Emmanuel; Piquéras, Laure; Remillieux, A.; Richard, Johan; Pécontal-Rousset, Arlette; Bardou, Lisa; Close, Madeline; Deshmukh, Rishi; Dimoudi, Sofia; Dubbledam, Marc; King, David J.; Morris, S. L.; Morris, Timothy; O’Brien, Kieran; Staykov, L.; Swinbank, Mark; Townson, Matthew J.; Younger, Eddy; Accardo, M.; Mendez, Domingo Avarez; Conzelmann, Ralf; Egner, Sebastian; George, E. M.; Gonté, Frederic; Hopgood, Joshua; Ives, Derek; Mehrgan, Leander; Mueller, E.; Péroux, Céline; Vernet, J.; Sanchez, Angel Alonso; Battaglia, G.; Cagigas, Miguel A.; Delgado, José Miguel; Izquierdo, Patricia Fernandez; López, Ana Belén. Fragoso; Garcia-Lorenzo, Maria Begoña.; Suárez, Elvio Hernández; Linares, José Miguel Herreros; Joven, E.; López, Roberto López; Martín, Y.; Mediavilla, E.; Monreal, A.; Castro, José Peñate; Rasilla, J. L.; Rebolo, R.; Rodríguez-Ramos, L. F.; Moreno, Afrodisio Vega; Viera, Teodora; Carlotti, Alexis; Correia, Jean-Jacques; Delboulbé, A.; Guieu, S.; Hours, Adrien; Hubert, Z.; Jocou, L.; Magnard, Y.; Moulin, T.; Pancher, Fabrice; Rabou, Patrick; Stadler, Eric; Contini, T.; Larrieu, Marie; Yan, F.; Lecron, Daniel; Rousseau, Sylvain; Beltramo-Martin, Olivier; Bon, William; Bonnefoi, Anne; Ceria, William; Choquet, Élodie; Correia, Carlos; Costille, A.; Dohlen, Kjetil; Ducret, Franck; El-Hadi, Kacem; Épinat, B.; Fétick, Romain; Gach, Jean-Luc; Groussin, O.; Jaafar, Issa; Merrer, J. Le; Llored, M.; Pedreros, Felipe; Renault, Edgard; Sanchez, P.; Vigan, A.; Vola, Pascal; Lim, Caroline; Vedrenne, Nicola; Petit, Cyril; Sauvage, Jean-François; Bagci, Taha; Cann, N.; Ortiz, Jorge C.; Elliott, Ellis; Seitis, Tea; Tosh, Ian; Anderson, Josh; Black, Martin; Bond, C.; Born, Andy; Campbell, Kenny; Campbell, Neil; Carruthers, J. N.; Cochrane, William; Dobson, Naomi; Evans, C. J.; Gallie, Angus; Gonzalez, O. A.; Harman, Joel; Henry, David; Humphreys, W. Griffith; Louth, Tom; Miller, C. J.; Montgomery, David; Murray, J. R.; O'Malley, Norman; Ritchie, L.T.; Sánchéz-Janssen, R.; Schwartz, Noah; Smith, Patrick J.; Watt, Stuart; Wells, Martyn; Wilson, Sandi; Gültekin, Kayhan; Mateo, Mario; Meyer, Michael; Valluri, Monica; Ahmad, Munadi; Booth, M.; Capone, J.; Cappellari, Michele; Gooding, David; Grisdale, Kearn; Hidalgo, Andrea; Kariuki, J. M.; Lewis, Ian; Lowe, Adam; Lynn, J Frewer; Menduina, Alvaro; Ozer, Zeynep; Preece, R.; Rigopoulou, D.; Rodrigues, M.; Routledge, Laurence

doi:10.1117/12.2562144

Cited by 15 publications

(9 citation statements)

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“…In this section we provide a preliminary design of a full LGS WFS arm for the ESO ELT and the TMT. For the former, we take as an example the Laser Tomography Adaptive Optics (LTAO) system of HARMONI, 38 which will make use of the 6 LGS provided by the ESO ELT. For the latter, we show the implementation for NFIRAOS, 39 the TMT Multi-Conjugate Adaptive Optics (MCAO) system.…”

Section: Examples Of Implementation Of a Cmos Detector Into A Lgs Wfsmentioning

confidence: 99%

Performance of a complementary metal-oxide-semiconductor sensor for laser guide star wavefront sensing

Bustos

Atwood

et al. 2022

J. Astron. Telesc. Instrum. Syst.

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The adaptive optics (AO) systems of future Extremely Large Telescopes (ELTs) will be assisted with laser guide stars (LGS) which will be created in the sodium layer at a height of ≈ 90 km above the telescopes. In a Shack-Hartmann wavefront sensor, the long elongation of LGS spots on the sub-pupils far apart from the laser beam axis constraints the design of the wavefront sensor (WFS) which must be able to fully sample the elongated spots without undersampling the non-elongated spots. To fulfill these requirements, a newly released large complementary metal oxide semiconductor (CMOS) sensor with 1100×1600 pixels and 9 µm pixel pitch could be employed. Here, we report on the characterization of such a sensor in terms of noise and linearity, and we evaluate its performance for wavefront sensing based on the spot centroid variations. We then illustrate how this new detector can be integrated into a full LGS WFS for both the ESO ELT and the TMT.

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Section: Examples Of Implementation Of a Cmos Detector Into A Lgs Wfsmentioning

confidence: 99%

Performance of a complementary metal-oxide-semiconductor sensor for laser guide star wavefront sensing

Bustos

Atwood

et al. 2022

J. Astron. Telesc. Instrum. Syst.

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“…The HARMONI 7 instrument is an integral field spectrograph that covers the wavelength range 0.47-2.45 µm using two different detector types. There are four spectrographs in HARMONI, four of which have 2x1 mosaics of IR detectors, and two of which additionally have 2x1 mosaics of visible detectors.…”

Section: Harmonimentioning

confidence: 99%

Detector Systems Engineering for Extremely Large Instruments

George,

Bezawada,

Ives

et al. 2020

Preprint

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The scientific detector systems for the ESO ELT first-light instruments, HARMONI, MICADO, and METIS, together will require 27 science detectors: seventeen 2.5 µm cutoff H4RG-15 detectors, four 4K x 4K 231-84 CCDs, five 5.3 µm cutoff H2RG detectors, and one 13.5 µm cutoff GEOSNAP detector. This challenging program of scientific detector system development covers everything from designing and producing state-of-the-art detector control and readout electronics, to developing new detector characterization techniques in the lab, to performance modeling and final system verification. We report briefly on the current design of these detector systems and developments underway to meet the challenging scientific performance goals of the ELT instruments.

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“…[7][8][9] Although our work is general, it is particularly interesting for the tomographic AO systems of a couple of first light instruments of the ELT: multi-conjugate AO RelaY (MAORY) 10 and High Angular Resolution Monolithic Optical and Near-infrared Integral field spectrograph (HARMONI). 11 We report in the following sections several examples derived from these instruments and the LGSWFS main parameters that we propose can be directly applied to them.…”

Section: Introductionmentioning

confidence: 99%

Key wavefront sensors features for laser-assisted tomographic adaptive optics systems on the Extremely Large Telescope

Fusco

Agapito

Neichel

et al. 2022

J. Astron. Telesc. Instrum. Syst.

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Laser guide star (LGS) wave-front sensing (LGSWFS) is a key element of tomographic adaptive optics system. However, when considering Extremely Large Telescope (ELT) scales, the LGS spot elongation becomes so large that it challenges the standard recipes to design LGSWFS. For classical Shack-Hartmann wave-front sensor (SHWFS), which is the current baseline for all ELT LGS-assisted instruments, a trade-off between the pupil spatial sampling [number of sub-apertures (SAs)], the SA field-of-view (FoV) and the pixel sampling within each SA is required. For ELT scales, this trade-off is also driven by strong technical constraints, especially concerning the available detectors and in particular their number of pixels. For SHWFS, a larger field of view per SA allows mitigating the LGS spot truncation, which represents a severe loss of performance due to measurement biases. For a given number of available detectors pixels, the SA FoV is competing with the proper sampling of the LGS spots, and/or the total number of SAs. We proposed a sensitivity analysis, and we explore how these parameters impacts the final performance. In particular, we introduce the concept of super resolution, which allows one to reduce the pupil sampling per WFS and opens an opportunity to propose potential LGSWFS designs providing the best performance for ELT scales.

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HARMONI: first light spectroscopy for the ELT: instrument final design and quantitative performance predictions

Cited by 15 publications

References 0 publications

Performance of a complementary metal-oxide-semiconductor sensor for laser guide star wavefront sensing

Performance of a complementary metal-oxide-semiconductor sensor for laser guide star wavefront sensing

Detector Systems Engineering for Extremely Large Instruments

Key wavefront sensors features for laser-assisted tomographic adaptive optics systems on the Extremely Large Telescope

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