Euclid: Early Release Observations — Programme overview and pipeline for compact- and diffuse-emission photometry

Euclid: Early Release Observations — Programme overview and pipeline for compact- and diffuse-emission photometry
J. -C. Cuillandre (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), E. Bertin (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), M. Bolzonella (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), H. Bouy (Laboratoire d’Astrophysique de Bordeaux, CNRS and Universit’e de Bordeaux, All’ee Geoffroy St. Hilaire, 33165 Pessac, France, Institut universitaire de France), S. Gwyn (NRC Herzberg, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada), S. Isani (Canada-France-Hawaii Telescope, 65-1238 Mamalahoa Hwy, Kamuela, HI 96743, USA), M. Kluge (Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany), O. Lai (Universit’e C^ote d’Azur, Observatoire de la C^ote d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, CS 34229, 06304 Nice cedex 4, France), A. Lanc{c}on (Observatoire Astronomique de Strasbourg), D. A. Lang (Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada), R. Laureijs (European Space Agency/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands), T. Saifollahi (Observatoire Astronomique de Strasbourg, Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands), M. Schirmer (Max-Planck-Institut f"ur Astronomie, K"onigstuhl 17, 69117 Heidelberg, Germany), C. Stone (Department of Physics, Universit’e de Montr’eal, 2900 Edouard Montpetit Blvd, Montr’eal, Qu’ebec H3T 1J4, Canada), Abdurro’uf (Johns Hopkins University 3400 North Charles Street Baltimore, MD 21218, USA), N. Aghanim (Universit’e Paris-Saclay, CNRS, Institut d’astrophysique spatiale, 91405, Orsay, France), B. Altieri (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), F. Annibali (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), H. Atek (Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Universit’e, 98 bis boulevard Arago, 75014 Paris, France), P. Awad (Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands), M. Baes (Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, 9000 Gent, Belgium), E. Ba~nados (Max-Planck-Institut f"ur Astronomie, K"onigstuhl 17, 69117 Heidelberg, Germany), D. Barrado (Centro de Astrobiolog’ia), S. Belladitta (Max-Planck-Institut f"ur Astronomie, K"onigstuhl 17, 69117 Heidelberg, Germany, INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), V. Belokurov (Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK), A. Boselli (Aix-Marseille Universit’e, CNRS, CNES, LAM, Marseille, France, INAF – Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047 Selargius), F. Bournaud (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), J. Bovy (David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto, 50 St George Street, Toronto, Ontario M5S 3H4, Canada), R. A. A. Bowler (Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK), G. Buenadicha (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), F. Buitrago (Departamento de F’isica Te’orica, At’omica y ‘Optica, Universidad de Valladolid, 47011 Valladolid, Spain, Instituto de Astrof’isica e Ci^encias do Espac{c}o, Faculdade de Ci^encias, Universidade de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal), M. Cantiello (INAF – Osservatorio Astronomico d’Abruzzo, Via Maggini, 64100, Teramo, Italy), D. Carollo (INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy), S. Codis (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), M. L. M. Collins (School of Mathematics and Physics, University of Surrey, Guildford, Surrey, GU2 7XH, UK), G. Congedo (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), E. Dalessandro (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), V. de Lapparent (Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Universit’e, 98 bis boulevard Arago, 75014 Paris, France), F. De Paolis (Department of Mathematics and Physics E. De Giorgi, University of Salento, Via per Arnesano, CP-I93, 73100, Lecce, Italy, INFN, Sezione di Lecce, Via per Arnesano, CP-193, 73100, Lecce, Italy, INAF-Sezione di Lecce, c/o Dipartimento Matematica e Fisica, Via per Arnesano, 73100, Lecce, Italy), J. M. Diego (Instituto de F’isica de Cantabria, Edificio Juan Jord’a, Avenida de los Castros, 39005 Santander, Spain), P. Dimauro (INAF-Osservatorio Astronomico di Roma, Via Frascati 33, 00078 Monteporzio Catone, Italy, Observatorio Nacional, Rua General Jose Cristino, 77-Bairro Imperial de Sao Cristovao, Rio de Janeiro, 20921-400, Brazil), J. Dinis (Departamento de F’isica, Faculdade de Ci^encias, Universidade de Lisboa, Edif’icio C8, Campo Grande, PT1749-016 Lisboa, Portugal, Instituto de Astrof’isica e Ci^encias do Espac{c}o, Faculdade de Ci^encias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal), H. Dole (Universit’e Paris-Saclay, CNRS, Institut d’astrophysique spatiale, 91405, Orsay, France), P. -A. Duc (Universit’e de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550, 67000 Strasbourg, France), D. Erkal (School of Mathematics and Physics, University of Surrey, Guildford, Surrey, GU2 7XH, UK), M. Ezziati (Aix-Marseille Universit’e, CNRS, CNES, LAM, Marseille, France), A. M. N. Ferguson (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), A. Ferr’e-Mateu (Departamento de Astrof’isica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain, Instituto de Astrof’isica de Canarias, Calle V’ia L’actea s/n, 38204, San Crist’obal de La Laguna, Tenerife, Spain), A. Franco (INFN, Sezione di Lecce, Via per Arnesano, CP-193, 73100, Lecce, Italy, Department of Mathematics and Physics E. De Giorgi, University of Salento, Via per Arnesano, CP-I93, 73100, Lecce, Italy, INAF-Sezione di Lecce, c/o Dipartimento Matematica e Fisica, Via per Arnesano, 73100, Lecce, Italy), R. Gavazzi (Aix-Marseille Universit’e, CNRS, CNES, LAM, Marseille, France, Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Universit’e, 98 bis boulevard Arago, 75014 Paris, France), K. George (Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany), W. Gillard (Aix-Marseille Universit’e, CNRS/IN2P3, CPPM, Marseille, France), J. B. Golden-Marx (School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK), B. Goldman (International Space University, 1 rue Jean-Dominique Cassini, 67400 Illkirch-Graffenstaden, France, Observatoire Astronomique de Strasbourg), A. H. Gonzalez (Department of Astronomy, University of Florida, Bryant Space Science Center, Gainesville, FL 32611, USA), R. Habas (INAF – Osservatorio Astronomico d’Abruzzo, Via Maggini, 64100, Teramo, Italy), W. G. Hartley (Department of Astronomy, University of Geneva, ch. d’Ecogia 16, 1290 Versoix, Switzerland), N. A. Hatch (School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK), R. Kohley (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), J. Hoar (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), J. M. Howell (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), L. K. Hunt (INAF-Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125, Firenze, Italy), P. Jablonka (Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique F’ed’erale de Lausanne), M. Jauzac (Department of Physics, Centre for Extragalactic Astronomy, Durham University, South Road, DH1 3LE, UK, Department of Physics, Institute for Computational Cosmology, Durham University, South Road, DH1 3LE, UK, Astrophysics Research Centre, University of KwaZulu-Natal, Westville Campus, Durban 4041, South Africa, School of Mathematics, Statistics & Computer Science, University of KwaZulu-Natal, Westville Campus, Durban 4041, South Africa), Y. Kang (Department of Astronomy, University of Geneva, ch. d’Ecogia 16, 1290 Versoix, Switzerland), J. H. Knapen (Instituto de Astrof’isica de Canarias, Calle V’ia L’actea s/n, 38204, San Crist’obal de La Laguna, Tenerife, Spain, Departamento de Astrof’isica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain), J. -P. Kneib (Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique F’ed’erale de Lausanne), R. Kohley (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), P. B. Kuzma (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan), S. S. Larsen (Department of Astrophysics/IMAPP, Radboud University, PO Box 9010, 6500 GL Nijmegen, The Netherlands), O. Marchal (Observatoire Astronomique de Strasbourg), J. Mart’in-Fleitas (Aurora Technology for European Space Agency), P. Marcos-Arenal (HE Space for European Space Agency), F. R. Marleau (Universit"at Innsbruck, Institut f"ur Astro- und Teilchenphysik, Technikerstr. 25/8, 6020 Innsbruck, Austria), E. L. Mart’in (Instituto de Astrof’isica de Canarias, Calle V’ia L’actea s/n, 38204, San Crist’obal de La Laguna, Tenerife, Spain, Departamento de Astrof’isica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain), D. Massari (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), A. W. McConnachie (NRC Herzberg, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada), M. Meneghetti (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy, INFN-Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy), M. Miluzio (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain, HE Space for European Space Agency), J. Miro Carretero (Leiden Observatory, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands, Departamento de F’isica de la Tierra y Astrof’isica, Universidad Complutense de Madrid, Plaza de las Ciencias 2, E-28040 Madrid, Spain), H. Miyatake (Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan, Institute for Advanced Research, Nagoya University, Chikusa-ku, Nagoya, 464-8601, Japan, Kavli Institute for the Physics and Mathematics of the Universe), M. Mondelin (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), M. Montes (Instituto de Astrof’isica de Canarias, Calle V’ia L’actea s/n, 38204, San Crist’obal de La Laguna, Tenerife, Spain, Departamento de Astrof’isica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain), A. Mora (Aurora Technology for European Space Agency), O. M"uller (Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique F’ed’erale de Lausanne), C. Nally (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), K. Noeske (European Space Agency, 8-10 rue Mario Nikis, 75738 Paris Cedex 15, France), A. A. Nucita (Department of Mathematics and Physics E. De Giorgi, University of Salento, Via per Arnesano, CP-I93, 73100, Lecce, Italy, INFN, Sezione di Lecce, Via per Arnesano, CP-193, 73100, Lecce, Italy, INAF-Sezione di Lecce, c/o Dipartimento Matematica e Fisica, Via per Arnesano, 73100, Lecce, Italy), P. A. Oesch (Department of Astronomy, University of Geneva, ch. d’Ecogia 16, 1290 Versoix, Switzerland, Niels Bohr Institute, University of Copenhagen, Jagtvej 128, 2200 Copenhagen, Denmark, Cosmic Dawn Center), M. Oguri (Center for Frontier Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan, Department of Physics, Graduate School of Science, Chiba University, 1-33 Yayoi-Cho, Inage-Ku, Chiba 263-8522, Japan), R. F. Peletier (Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands), M. Poulain (Space physics and astronomy research unit, University of Oulu, Pentti Kaiteran katu 1, FI-90014 Oulu, Finland), L. Quilley (Centre de Recherche Astrophysique de Lyon, UMR5574, CNRS, Universit’e Claude Bernard Lyon 1, ENS de Lyon, 69230, Saint-Genis-Laval, France), G. D. Racca (European Space Agency/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands), M. Rejkuba (European Southern Observatory, Karl-Schwarzschild Str. 2, 85748 Garching, Germany), J. Rhodes (Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA), P. -F. Rocci (Universit’e Paris-Saclay, CNRS, Institut d’astrophysique spatiale, 91405, Orsay, France), J. Rom’an (Departamento de Astrof’isica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain, Instituto de Astrof’isica de Canarias, Calle V’ia L’actea s/n, 38204, San Crist’obal de La Laguna, Tenerife, Spain), S. Sacquegna (Department of Mathematics and Physics E. De Giorgi, University of Salento, Via per Arnesano, CP-I93, 73100, Lecce, Italy, INFN, Sezione di Lecce, Via per Arnesano, CP-193, 73100, Lecce, Italy, INAF-Sezione di Lecce, c/o Dipartimento Matematica e Fisica, Via per Arnesano, 73100, Lecce, Italy), E. Saremi (School of Physics & Astronomy, University of Southampton, Highfield Campus, Southampton SO17 1BJ, UK), R. Scaramella (INAF-Osservatorio Astronomico di Roma, Via Frascati 33, 00078 Monteporzio Catone, Italy), E. Schinnerer (Max-Planck-Institut f"ur Astronomie, K"onigstuhl 17, 69117 Heidelberg, Germany), S. Serjeant (School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK), E. Sola (Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK), J. G. Sorce (Univ. Lille, CNRS, Centrale Lille, UMR 9189 CRIStAL, 59000 Lille, France, Universit’e Paris-Saclay, CNRS, Institut d’astrophysique spatiale, 91405, Orsay, France, Leibniz-Institut f"ur Astrophysik), F. Tarsitano (Department of Astronomy, University of Geneva, ch. d’Ecogia 16, 1290 Versoix, Switzerland), I. Tereno (Departamento de F’isica, Faculdade de Ci^encias, Universidade de Lisboa, Edif’icio C8, Campo Grande, PT1749-016 Lisboa, Portugal, Instituto de Astrof’isica e Ci^encias do Espac{c}o, Faculdade de Ci^encias, Universidade de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal), S. Toft (Cosmic Dawn Center, Niels Bohr Institute, University of Copenhagen, Jagtvej 128, 2200 Copenhagen, Denmark), C. Tortora (INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy), M. Urbano (Observatoire Astronomique de Strasbourg), A. Venhola (Space physics and astronomy research unit, University of Oulu, Pentti Kaiteran katu 1, FI-90014 Oulu, Finland), K. Voggel (Universit’e de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550, 67000 Strasbourg, France), J. R. Weaver (Department of Astronomy, University of Massachusetts, Amherst, MA 01003, USA), X. Xu (Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands), M. v{Z}erjal (Instituto de Astrof’isica de Canarias, Calle V’ia L’actea s/n, 38204, San Crist’obal de La Laguna, Tenerife, Spain, Departamento de Astrof’isica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain), R. Z"oller (Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany, Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany), S. Andreon (INAF-Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano, Italy), N. Auricchio (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), M. Baldi (Dipartimento di Fisica e Astronomia, Universit`a di Bologna, Via Gobetti 93/2, 40129 Bologna, Italy, INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy, INFN-Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy), A. Balestra (INAF-Osservatorio Astronomico di Padova, Via dell’Osservatorio 5, 35122 Padova, Italy), S. Bardelli (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), A. Basset (Centre National d’Etudes Spatiales — Centre spatial de Toulouse, 18 avenue Edouard Belin, 31401 Toulouse Cedex 9, France), R. Bender (Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany, Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany), C. Bodendorf (Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany), E. Branchini (Dipartimento di Fisica, Universit`a di Genova, Via Dodecaneso 33, 16146, Genova, Italy, INFN-Sezione di Genova, Via Dodecaneso 33, 16146, Genova, Italy, INAF-Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano, Italy), S. Brau-Nogue (Institut de Recherche en Astrophysique et Plan’etologie), M. Brescia (Department of Physics "E. Pancini", University Federico II, Via Cinthia 6, 80126, Napoli, Italy, INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy, INFN section of Naples, Via Cinthia 6, 80126, Napoli, Italy), J. Brinchmann (Instituto de Astrof’isica e Ci^encias do Espac{c}o, Universidade do Porto, CAUP, Rua das Estrelas, PT4150-762 Porto, Portugal, Faculdade de Ci^encias da Universidade do Porto, Rua do Campo de Alegre, 4150-007 Porto, Portugal), S. Camera (Dipartimento di Fisica, Universit`a degli Studi di Torino, Via P. Giuria 1, 10125 Torino, Italy, INFN-Sezione di Torino, Via P. Giuria 1, 10125 Torino, Italy, INAF-Osservatorio Astrofisico di Torino, Via Osservatorio 20, 10025 Pino Torinese), V. Capobianco (INAF-Osservatorio Astrofisico di Torino, Via Osservatorio 20, 10025 Pino Torinese), C. Carbone (INAF-IASF Milano, Via Alfonso Corti 12, 20133 Milano, Italy), J. Carretero (Centro de Investigaciones Energ’eticas, Medioambientales y Tecnol’ogicas, Port d’Informaci’o Cient’ifica, Campus UAB, C. Albareda s/n, 08193 Bellaterra), S. Casas (Institute for Theoretical Particle Physics and Cosmology), F. J. Castander (Institute of Space Sciences, Institut d’Estudis Espacials de Catalunya), M. Castellano (INAF-Osservatorio Astronomico di Roma, Via Frascati 33, 00078 Monteporzio Catone, Italy), S. Cavuoti (INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy, INFN section of Naples, Via Cinthia 6, 80126, Napoli, Italy), A. Cimatti (Dipartimento di Fisica e Astronomia "Augusto Righi" – Alma Mater Studiorum Universit`a di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy), C. J. Conselice (Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK), L. Conversi (European Space Agency/ESRIN, Largo Galileo Galilei 1, 00044 Frascati, Roma, Italy, ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), Y. Copin (Universit’e Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822, Villeurbanne, F-69100, France), F. Courbin (Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique F’ed’erale de Lausanne), H. M. Courtois (UCB Lyon 1, CNRS/IN2P3, IUF, IP2I Lyon, 4 rue Enrico Fermi, 69622 Villeurbanne, France), M. Cropper (Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK), J. -G. Cuby (Canada-France-Hawaii Telescope, 65-1238 Mamalahoa Hwy, Kamuela, HI 96743, USA, Aix-Marseille Universit’e, CNRS, CNES, LAM, Marseille, France), A. Da Silva (Departamento de F’isica, Faculdade de Ci^encias, Universidade de Lisboa, Edif’icio C8, Campo Grande, PT1749-016 Lisboa, Portugal, Instituto de Astrof’isica e Ci^encias do Espac{c}o, Faculdade de Ci^encias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal), H. Degaudenzi (Department of Astronomy, University of Geneva, ch. d’Ecogia 16, 1290 Versoix, Switzerland), A. M. Di Giorgio (INAF-Istituto di Astrofisica e Planetologia Spaziali, via del Fosso del Cavaliere, 100, 00100 Roma, Italy), M. Douspis (Universit’e Paris-Saclay, CNRS, Institut d’astrophysique spatiale, 91405, Orsay, France), C. A. J. Duncan (Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK), X. Dupac (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), S. Dusini (INFN-Padova, Via Marzolo 8, 35131 Padova, Italy), M. Fabricius (Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany, Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany), M. Farina (INAF-Istituto di Astrofisica e Planetologia Spaziali, via del Fosso del Cavaliere, 100, 00100 Roma, Italy), S. Farrens (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), S. Ferriol (Universit’e Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822, Villeurbanne, F-69100, France), S. Fotopoulou (School of Physics, HH Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK), M. Frailis (INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy), E. Franceschi (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), S. Galeotta (INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy), B. Garilli (INAF-IASF Milano, Via Alfonso Corti 12, 20133 Milano, Italy), B. Gillis (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), C. Giocoli (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Via Irnerio 46, 40126 Bologna, Italy), P. G’omez-Alvarez (FRACTAL S.L.N.E., calle Tulip’an 2, Portal 13 1A, 28231, Las Rozas de Madrid, Spain, ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), A. Grazian (INAF-Osservatorio Astronomico di Padova, Via dell’Osservatorio 5, 35122 Padova, Italy), F. Grupp (Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany, Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany), L. Guzzo (Dipartimento di Fisica "Aldo Pontremoli", Universit`a degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy, INAF-Osservatorio Astronomico di Brera, Via Brera 28, 20122 Milano, Italy), S. V. H. Haugan (Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, 0315 Oslo, Norway), J. Hoar (ESAC/ESA, Camino Bajo del Castillo, s/n., Urb. Villafranca del Castillo, 28692 Villanueva de la Ca~nada, Madrid, Spain), H. Hoekstra (Leiden Observatory, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands), W. Holmes (Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA), I. Hook (Department of Physics, Lancaster University, Lancaster, LA1 4YB, UK), F. Hormuth (Felix Hormuth Engineering, Goethestr. 17, 69181 Leimen, Germany), A. Hornstrup (Technical University of Denmark, Elektrovej 327, 2800 Kgs. Lyngby, Denmark, Cosmic Dawn Center), P. Hudelot (Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Universit’e, 98 bis boulevard Arago, 75014 Paris, France), K. Jahnke (Max-Planck-Institut f"ur Astronomie, K"onigstuhl 17, 69117 Heidelberg, Germany), M. Jhabvala (NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA), E. Keih"anen (Department of Physics and Helsinki Institute of Physics, Gustaf H"allstr"omin katu 2, 00014 University of Helsinki, Finland), S. Kermiche (Aix-Marseille Universit’e, CNRS/IN2P3, CPPM, Marseille, France), A. Kiessling (Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA), M. Kilbinger (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), T. Kitching (Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK), B. Kubik (Universit’e Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822, Villeurbanne, F-69100, France), K. Kuijken (Leiden Observatory, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands), M. K"ummel (Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany), M. Kunz (Universit’e de Gen`eve, D’epartement de Physique Th’eorique and Centre for Astroparticle Physics, 24 quai Ernest-Ansermet, CH-1211 Gen`eve 4, Switzerland), H. Kurki-Suonio (Department of Physics, P.O. Box 64, 00014 University of Helsinki, Finland, Helsinki Institute of Physics, Gustaf H"allstr"omin katu 2, University of Helsinki, Helsinki, Finland), O. Lahav (Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK), S. Ligori (INAF-Osservatorio Astrofisico di Torino, Via Osservatorio 20, 10025 Pino Torinese), P. B. Lilje (Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, 0315 Oslo, Norway), V. Lindholm (Department of Physics, P.O. Box 64, 00014 University of Helsinki, Finland, Helsinki Institute of Physics, Gustaf H"allstr"omin katu 2, University of Helsinki, Helsinki, Finland), I. Lloro (NOVA optical infrared instrumentation group at ASTRON, Oude Hoogeveensedijk 4, 7991PD, Dwingeloo, The Netherlands), D. Maino (Dipartimento di Fisica "Aldo Pontremoli", Universit`a degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy, INAF-IASF Milano, Via Alfonso Corti 12, 20133 Milano, Italy, INFN-Sezione di Milano, Via Celoria 16, 20133 Milano, Italy), E. Maiorano (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), O. Mansutti (INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy), O. Marggraf (Universit"at Bonn, Argelander-Institut f"ur Astronomie, Auf dem H"ugel 71, 53121 Bonn, Germany), K. Markovic (Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA), N. Martinet (Aix-Marseille Universit’e, CNRS, CNES, LAM, Marseille, France), F. Marulli (Dipartimento di Fisica e Astronomia "Augusto Righi" – Alma Mater Studiorum Universit`a di Bologna, via Piero Gobetti 93/2, 40129 Bologna, Italy, INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy, INFN-Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy), R. Massey (Department of Physics, Institute for Computational Cosmology, Durham University, South Road, DH1 3LE, UK), S. Maurogordato (Universit’e C^ote d’Azur, Observatoire de la C^ote d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, CS 34229, 06304 Nice cedex 4, France), H. J. McCracken (Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Universit’e, 98 bis boulevard Arago, 75014 Paris, France), E. Medinaceli (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), Y. Mellier (Institut d’Astrophysique de Paris, 98bis Boulevard Arago, 75014, Paris, France, Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Universit’e, 98 bis boulevard Arago, 75014 Paris, France), G. Meylan (Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique F’ed’erale de Lausanne), J. J. Mohr (Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany, Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany), M. Moresco (Dipartimento di Fisica e Astronomia "Augusto Righi" – Alma Mater Studiorum Universit`a di Bologna, via Piero Gobetti 93/2, 40129 Bologna, Italy, INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), L. Moscardini (Dipartimento di Fisica e Astronomia "Augusto Righi" – Alma Mater Studiorum Universit`a di Bologna, via Piero Gobetti 93/2, 40129 Bologna, Italy, INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy, INFN-Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy), E. Munari (INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy, IFPU, Institute for Fundamental Physics of the Universe, via Beirut 2, 34151 Trieste, Italy), R. Nakajima (Universit"at Bonn, Argelander-Institut f"ur Astronomie, Auf dem H"ugel 71, 53121 Bonn, Germany), R. C. Nichol (School of Mathematics and Physics, University of Surrey, Guildford, Surrey, GU2 7XH, UK), S. -M. Niemi (European Space Agency/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands), C. Padilla (Institut de F’isica d’Altes Energies), S. Paltani (Department of Astronomy, University of Geneva, ch. d’Ecogia 16, 1290 Versoix, Switzerland), F. Pasian (INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy), J. A. Peacock (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), K. Pedersen (Department of Physics and Astronomy, University of Aarhus, Ny Munkegade 120, DK-8000 Aarhus C, Denmark), W. J. Percival (Waterloo Centre for Astrophysics, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada, Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada), V. Pettorino (European Space Agency/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands), S. Pires (Universit’e Paris-Saclay, Universit’e Paris Cit’e, CEA, CNRS, AIM, 91191, Gif-sur-Yvette, France), G. Polenta (Space Science Data Center, Italian Space Agency, via del Politecnico snc, 00133 Roma, Italy), M. Poncet (Centre National d’Etudes Spatiales — Centre spatial de Toulouse, 18 avenue Edouard Belin, 31401 Toulouse Cedex 9, France), L. A. Popa (Institute of Space Science, Str. Atomistilor, nr. 409 Mu{a}gurele, Ilfov, 077125, Romania), L. Pozzetti (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), F. Raison (Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany), R. Rebolo (Instituto de Astrof’isica de Canarias, Calle V’ia L’actea s/n, 38204, San Crist’obal de La Laguna, Tenerife, Spain, Departamento de Astrof’isica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain), A. Refregier (Institute for Particle Physics and Astrophysics, Dept. of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland), A. Renzi (Dipartimento di Fisica e Astronomia "G. Galilei", Universit`a di Padova, Via Marzolo 8, 35131 Padova, Italy, INFN-Padova, Via Marzolo 8, 35131 Padova, Italy), G. Riccio (INAF-Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy), Hans-Walter Rix (Max-Planck-Institut f"ur Astronomie, K"onigstuhl 17, 69117 Heidelberg, Germany), E. Romelli (INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy), M. Roncarelli (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), E. Rossetti (Dipartimento di Fisica e Astronomia, Universit`a di Bologna, Via Gobetti 93/2, 40129 Bologna, Italy), R. Saglia (Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany, Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany), D. Sapone (Departamento de F’isica, FCFM, Universidad de Chile, Blanco Encalada 2008, Santiago, Chile), P. Schneider (Universit"at Bonn, Argelander-Institut f"ur Astronomie, Auf dem H"ugel 71, 53121 Bonn, Germany), T. Schrabback (Universit"at Innsbruck, Institut f"ur Astro- und Teilchenphysik, Technikerstr. 25/8, 6020 Innsbruck, Austria), A. Secroun (Aix-Marseille Universit’e, CNRS/IN2P3, CPPM, Marseille, France), G. Seidel (Max-Planck-Institut f"ur Astronomie, K"onigstuhl 17, 69117 Heidelberg, Germany), S. Serrano (Institut d’Estudis Espacials de Catalunya, Satlantis, University Science Park, Sede Bld 48940, Leioa-Bilbao, Spain, Institute of Space Sciences), C. Sirignano (Dipartimento di Fisica e Astronomia "G. Galilei", Universit`a di Padova, Via Marzolo 8, 35131 Padova, Italy, INFN-Padova, Via Marzolo 8, 35131 Padova, Italy), G. Sirri (INFN-Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy), J. Skottfelt (Centre for Electronic Imaging, Open University, Walton Hall, Milton Keynes, MK7~6AA, UK), L. Stanco (INFN-Padova, Via Marzolo 8, 35131 Padova, Italy), P. Tallada-Cresp’i (Centro de Investigaciones Energ’eticas, Medioambientales y Tecnol’ogicas, Port d’Informaci’o Cient’ifica, Campus UAB, C. Albareda s/n, 08193 Bellaterra), A. N. Taylor (Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), H. I. Teplitz (Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125, USA), R. Toledo-Moreo (Universidad Polit’ecnica de Cartagena, Departamento de Electr’onica y Tecnolog’ia de Computadoras, Plaza del Hospital 1, 30202 Cartagena, Spain), A. Tsyganov (Centre for Information Technology, University of Groningen, P.O. Box 11044, 9700 CA Groningen, The Netherlands), I. Tutusaus (Institut de Recherche en Astrophysique et Plan’etologie), E. A. Valentijn (Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands), L. Valenziano (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy, INFN-Bologna, Via Irnerio 46, 40126 Bologna, Italy), T. Vassallo (Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany, INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy), G. Verdoes Kleijn (Kapteyn Astronomical Institute, University of Groningen, PO Box 800, 9700 AV Groningen, The Netherlands), Y. Wang (Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125, USA), J. Weller (Universit"ats-Sternwarte M"unchen, Fakult"at f"ur Physik, Ludwig-Maximilians-Universit"at M"unchen, Scheinerstrasse 1, 81679 M"unchen, Germany, Max Planck Institute for Extraterrestrial Physics, Giessenbachstr. 1, 85748 Garching, Germany), O. R. Williams (Centre for Information Technology, University of Groningen, P.O. Box 11044, 9700 CA Groningen, The Netherlands), G. Zamorani (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), E. Zucca (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Via Piero Gobetti 93/3, 40129 Bologna, Italy), C. Baccigalupi (IFPU, Institute for Fundamental Physics of the Universe, via Beirut 2, 34151 Trieste, Italy, INAF-Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 34143 Trieste, Italy, INFN, Sezione di Trieste, Via Valerio 2, 34127 Trieste TS, Italy, SISSA, International School for Advanced Studies, Via Bonomea 265, 34136 Trieste TS, Italy), C. Burigana (INAF, Istituto di Radioastronomia, Via Piero Gobetti 101, 40129 Bologna, Italy, INFN-Bologna, Via Irnerio 46, 40126 Bologna, Italy), P. Casenove (Centre National d’Etudes Spatiales — Centre spatial de Toulouse, 18 avenue Edouard Belin, 31401 Toulouse Cedex 9, France), P. Liebing (Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK), V. Scottez (Institut d’Astrophysique de Paris, 98bis Boulevard Arago, 75014, Paris, France, Junia, EPA department, 41 Bd Vauban, 59800 Lille, France), P. Simon (Universit"at Bonn, Argelander-Institut f"ur Astronomie, Auf dem H"ugel 71, 53121 Bonn, Germany), D. Scott (Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada)
arXiv:2405.13496v1 Announce Type: new
Abstract: The Euclid ERO showcase Euclid’s capabilities in advance of its main mission, targeting 17 astronomical objects, from galaxy clusters, nearby galaxies, globular clusters, to star-forming regions. A total of 24 hours observing time was allocated in the early months of operation, engaging the scientific community through an early public data release. We describe the development of the ERO pipeline to create visually compelling images while simultaneously meeting the scientific demands within months of launch, leveraging a pragmatic, data-driven development strategy. The pipeline’s key requirements are to preserve the image quality and to provide flux calibration and photometry for compact and extended sources. The pipeline’s five pillars are: removal of instrumental signatures; astrometric calibration; photometric calibration; image stacking; and the production of science-ready catalogues for both the VIS and NISP instruments. We report a PSF with a full width at half maximum of 0.16″ in the optical and 0.49″ in the three NIR bands. Our VIS mean absolute flux calibration is accurate to about 1%, and 10% for NISP due to a limited calibration set; both instruments have considerable colour terms. The median depth is 25.3 and 23.2 AB mag with a SNR of 10 for galaxies, and 27.1 and 24.5 AB mag at an SNR of 5 for point sources for VIS and NISP, respectively. Euclid’s ability to observe diffuse emission is exceptional due to its extended PSF nearly matching a pure diffraction halo, the best ever achieved by a wide-field, high-resolution imaging telescope. Euclid offers unparalleled capabilities for exploring the LSB Universe across all scales, also opening a new observational window in the NIR. Median surface-brightness levels of 29.9 and 28.3 AB mag per square arcsec are achieved for VIS and NISP, respectively, for detecting a 10 arcsec x 10 arcsec extended feature at the 1 sigma level.arXiv:2405.13496v1 Announce Type: new
Abstract: The Euclid ERO showcase Euclid’s capabilities in advance of its main mission, targeting 17 astronomical objects, from galaxy clusters, nearby galaxies, globular clusters, to star-forming regions. A total of 24 hours observing time was allocated in the early months of operation, engaging the scientific community through an early public data release. We describe the development of the ERO pipeline to create visually compelling images while simultaneously meeting the scientific demands within months of launch, leveraging a pragmatic, data-driven development strategy. The pipeline’s key requirements are to preserve the image quality and to provide flux calibration and photometry for compact and extended sources. The pipeline’s five pillars are: removal of instrumental signatures; astrometric calibration; photometric calibration; image stacking; and the production of science-ready catalogues for both the VIS and NISP instruments. We report a PSF with a full width at half maximum of 0.16″ in the optical and 0.49″ in the three NIR bands. Our VIS mean absolute flux calibration is accurate to about 1%, and 10% for NISP due to a limited calibration set; both instruments have considerable colour terms. The median depth is 25.3 and 23.2 AB mag with a SNR of 10 for galaxies, and 27.1 and 24.5 AB mag at an SNR of 5 for point sources for VIS and NISP, respectively. Euclid’s ability to observe diffuse emission is exceptional due to its extended PSF nearly matching a pure diffraction halo, the best ever achieved by a wide-field, high-resolution imaging telescope. Euclid offers unparalleled capabilities for exploring the LSB Universe across all scales, also opening a new observational window in the NIR. Median surface-brightness levels of 29.9 and 28.3 AB mag per square arcsec are achieved for VIS and NISP, respectively, for detecting a 10 arcsec x 10 arcsec extended feature at the 1 sigma level.