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The E-ELT first light spectrograph HARMONI: capabilities and modes

Thatte, Niranjan A. and Clarke, Fraser and Bryson, Ian and Shnetler, Hermine and Tecza, Matthias and Fusco, Thierry and Bacon, Roland M. and Richard, Johan and Mediavilla, Evencio and Neichel, Benoît and Arribas, Santiago and Garcia-Lorenzo, Begoña and Evans, Christopher J. and Remillieux, Alban and El Madi, Kacem and Herreros, Jose Miguel and Melotte, Dave and O'Brien, Kieran and Tosh, Ian A. and Vernet, Joël and Hammersley, Peter and Ives, Derek J. and Finger, Gert and Houghton, Ryan and Rigopoulou, Dimitra and Lynn, James D. and Allen, Jamie R. and Zieleniewski, Simon D. and Kendrew, Sarah and Ferraro-Wood, Vanessa and Pécontal-Rousset, Arlette and Kosmalski, Johan and Laurent, Florence and Loupias, Magali and Piqueras, Laure and Renault, Edgar and Blaizot, Jeremy and Daguisé, Eric and Migniau, Jean-Emmanuel and Jarno, Aurélien and Born, Andy and Gallie, Angus M. and Montgomery, David M. and Henry, David and Schwartz, Noah and Taylor, William and Zins, Gérard and Rodríguez-Ramos, Luis Fernando and Cagigas, Miguel and Battaglia, Giuseppina and Rebolo López, Refael and Hernández Suárez, Elvio and Gigante-Ripoll, José Vicente and Piqueras López, Javier and Villa Martin, Montserrat and Correia, Carlos and Pascal, Sandrine and Blanco, Leonardo and Vola, Pascal and Epinat, Benoit and Peroux, Celine and Vigan, Arthur and Dohlen, Kjetil and Sauvage, Jean-Francois and Lee, Martin and Carlotti, Alexis and Verinaud, Christophe and Morris, Tim and Myers, Richard and Reeves, Andrew and Swinbank, Mark and Calcines, Ariadna and Larrieu, Marrie (2016) 'The E-ELT first light spectrograph HARMONI: capabilities and modes.', in Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI. .


HARMONI is the E-ELT’s first light visible and near-infrared integral field spectrograph. It will provide four different spatial scales, ranging from coarse spaxels of 60 × 30 mas best suited for seeing limited observations, to 4 mas spaxels that Nyquist sample the diffraction limited point spread function of the E-ELT at near-infrared wavelengths. Each spaxel scale may be combined with eleven spectral settings, that provide a range of spectral resolving powers (R ~3500, 7500 and 20000) and instantaneous wavelength coverage spanning the 0.5 – 2.4 μm wavelength range of the instrument. In autumn 2015, the HARMONI project started the Preliminary Design Phase, following signature of the contract to design, build, test and commission the instrument, signed between the European Southern Observatory and the UK Science and Technology Facilities Council. Crucially, the contract also includes the preliminary design of the HARMONI Laser Tomographic Adaptive Optics system. The instrument’s technical specifications were finalized in the period leading up to contract signature. In this paper, we report on the first activity carried out during preliminary design, defining the baseline architecture for the system, and the trade-off studies leading up to the choice of baseline.

Item Type:Book chapter
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Publisher statement:Copyright (2016) Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Date accepted:No date available
Date deposited:19 January 2023
Date of first online publication:09 August 2016
Date first made open access:19 January 2023

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