doi.eso.org

• Padovani, Paolo [European Southern Observatory (ESO)]
• Cirasuolo, Michele [European Southern Observatory (ESO)]
• van der Burg, Remco [European Southern Observatory (ESO)]
• Cantalloube, Faustine [Aix Marseille University, CNRS, CNES, LAM, Marseille, France]
• George, Elizabeth [European Southern Observatory (ESO)]
• Kasper, Markus [European Southern Observatory (ESO)]
• Leschinski, Kieran [Department of Astrophysics, University of Vienna, Austria]
• Martins, Carlos [Centre for Astrophysics of the University of Porto, Portugal]
• Milli, Julien [Grenoble Alpes University, CNRS, IPAG, France]
• Möhler, Sabine [European Southern Observatory (ESO)]
• Neeser, Mark [European Southern Observatory (ESO)]
• Neichel, Benoît [Aix Marseille University, CNRS, CNES, LAM, Marseille, France]
• Otarola, Angel [European Southern Observatory (ESO)]
• Sánchez-Janssen, Rubén [STFC UK Astronomy Technology Centre, Edinburgh, UK]
• Serra, Benoît [European Southern Observatory (ESO)]
• Smette, Alain [European Southern Observatory (ESO)]
• Valenti, Elena [European Southern Observatory (ESO)]
• Verinaud, Christophe [European Southern Observatory (ESO)]
• Vernet, Joël [European Southern Observatory (ESO)]
• Absil, Olivier [STAR Institute, University of Liège, Belgium]
• Agapito, Guido [INAF–Astrophysical Observatory of Arcetri, Firenze, Italy]
• Andersen, Morten [European Southern Observatory (ESO)]
• Arcidiacono, Carmelo [INAF–Astronomical Observatory of Padua, Italy]
• Arko, Matej [European Space Agency, ESTEC, the Netherlands]
• Baudoz, Pierre [LESIA, Paris Observatory, CNRS, Meudon, France]
• Beltramo-Martin, Olivier [Aix Marseille University, CNRS, CNES, LAM, Marseille, France; SpaceAble, France]
• Biancalani, Enrico [Leiden Observatory, the Netherlands]
• Bierwirth, Thomas [European Southern Observatory (ESO)]
• Burtscher, Leonard [Leiden Observatory, the Netherlands]
• Carlà, Giulia [INAF–Astrophysical Observatory of Arcetri, Firenze, Italy]
• Castro-Almazán, Julio A. [Astrophysics Institute of the Canaries, La Laguna, Spain and Department of Astrophysics, University of La Laguna, Spain]
• Cheffot, Anne-Laure [INAF–Astrophysical Observatory of Arcetri, Firenze, Italy]
• Coccato, Lodovico [European Southern Observatory (ESO)]
• Correia, Carlos [Faculty of Engineering, University of Porto, Portugal; Aix Marseille University, CNRS, CNES, LAM, Marseille, France; Space ODT – Optical Deblurring Technologies, Porto, Portugal]
• Fetick, Romain [Aix Marseille University, CNRS, CNES, LAM, Marseille, France; DOTA, ONERA, Paris Saclay University, Palaiseau, France]
• Fiorentino, Giuliana [INAF–Astronomical Observatory of Rome, Italy]
• Fusco, Thierry [Aix Marseille University, CNRS, CNES, LAM, Marseille, France; DOTA, ONERA, Paris Saclay University, Palaiseau, France]
• García-Lorenzo, Begoña [Astrophysics Institute of the Canaries, La Laguna, Spain and Department of Astrophysics, University of La Laguna, Spain]
• Gentile Fusillo, Nicola [European Southern Observatory (ESO)]
• Gonzalez, Oscar [STFC UK Astronomy Technology Centre, Edinburgh, UK]
• Grazian, Andrea [INAF–Astronomical Observatory of Padua, Italy]
• Gullieuszik, Marco [INAF–Astronomical Observatory of Padua, Italy]
• Hainaut, Olivier [European Southern Observatory (ESO)]
• Ivanov, Valentin [European Southern Observatory (ESO)]
• Kaasinen, Melanie [European Southern Observatory (ESO)]
• Kaddad, Darshan [University of Oxford, UK; Space Telescope Science Institute, Baltimore, MD, USA]
• Kamiński, Tomasz [Nicolaus Copernicus Astronomical Center, Toruń, Poland]
• Kausch, Wolfgang [Institute for Astro- and Particle Physics, Leopold Franzens University, Innsbruck, Austria]
• Kerber, Florian [European Southern Observatory (ESO)]
• Kimeswenger, Stefan [Institute for Astro- and Particle Physics, Leopold Franzens University, Innsbruck, Austria; Institute of Astronomy, Catholic University of the North, Antofagasta, Chile]
• Kokotanekova, Rosita [Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria]
• Kuznetsov, Arseniy [European Southern Observatory (ESO); Aix Marseille University, CNRS, CNES, LAM, Marseille, France; DOTA, ONERA, Paris Saclay University, Palaiseau, France]
• Lau, Alexis [Aix Marseille University, CNRS, CNES, LAM, Marseille, France]
• Le Louarn, Miska [European Southern Observatory (ESO)]
• Lemmel, Frédéric [European Space Agency, ESTEC, the Netherlands]
• Liske, Jochen [Hamburg Observatory, Hamburg University, Germany]
• Lo Curto, Gaspare [European Southern Observatory (ESO)]
• Lucsanyi, David [CERN, Switzerland]
• Lundin, Lars [European Southern Observatory (ESO)]
• Noll, Stefan [University of Augsburg, Germany; German Aerospace Center (DLR), Oberpfaffenhofen, Germany]
• Oberti, Sylvain [European Southern Observatory (ESO)]
• Osborn, James [Centre for Advanced Instrumentation, Department of Physics, Durham University, UK]
• Masciadri, Elena [INAF–Astrophysical Observatory of Arcetri, Firenze, Italy]
• Milaković, Dinko [INAF–Astronomical Observatory of Trieste, Italy; Institute for Fundamental Physics of the Universe, Trieste, Italy; National Institute for Nuclear Physics (INFN), Trieste Section, Italy]
• Murphy, Michael T. [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Australia]
• Pedichini, Fernando [INAF–Astronomical Observatory of Rome, Italy]
• Pereira Santaella, Miguel [University of Oxford, UK]
• Piazzesi, Roberto [INAF–Astronomical Observatory of Rome, Italy]
• Piqueras López, Javier [Centre for Astrobiology (CAB), Madrid, Spain]
• Plantet, Cédric [INAF–Astrophysical Observatory of Arcetri, Firenze, Italy]
• Prod'homme, Thibaut [European Space Agency, ESTEC, the Netherlands]
• Przybilla, Norbert [Institute for Astro- and Particle Physics, Leopold Franzens University, Innsbruck, Austria]
• Puech, Mathieu [GEPI, Paris Observatory, Université PSL, CNRS, Meudon, France]
• Reid, Derryck T. [Scottish Universities Physics Alliance (SUPA), Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, UK]
• Reiners, Ansgar [Astrophysics und Geophysics Institute, Georg August University, Göttingen, Germany]
• Rijnenberg, Rutger [Leiden Observatory, the Netherlands]
• Rodrigues, Myriam [GEPI, Paris Observatory, Université PSL, CNRS, Meudon, France]
• Rossi, Fabio [INAF–Astrophysical Observatory of Arcetri, Firenze, Italy]
• Routledge, Laurence [University of Oxford, UK]
• Smit, Hans [European Space Agency, ESTEC, the Netherlands]
• Tecza, Mathias [University of Oxford, UK]
• Thatte, Niranjan [University of Oxford, UK]
• van Boekel, Roy [Max Planck Institute for Astronomy, Heidelberg, Germany]
• Verma, Aprajita [University of Oxford, UK]
• Vigan, Arthur [Aix Marseille University, CNRS, CNES, LAM, Marseille, France]

Since 2005 ESO has been working with its community and industry to develop an extremely large optical/infrared telescope. ESO’s Extremely Large Telescope, or ELT for short, is a revolutionary ground-based telescope that will have a 39-metre main mirror and will be the largest visible and infrared light telescope in the world. To address specific topics that are needed for the science operations and calibrations of the telescope, thirteen specific working groups were created to coordinate the effort between ESO, the instrument consortia, and the wider community. We describe here the goals of these working groups as well as their achievements so far.