Euclid Data Release 1 (DR1): VIS processing and data products
Abstract
This paper describes the characteristics of the Euclid visible imager (VIS) data delivered as part of the Euclid Data Release 1 (DR1). This data set contains 42092 calibrated frames. Validated nominal exposures cover 2092 deg$^2$ of sky. We outline the minor changes made to the VIS processing function (PF) since previous releases. For the wide survey, the photometric and astrometric accuracy of the reference stellar sample $(18.5 < I_{\rm E} < 19.8)$ is excellent. The internal and external astrometric dispersions are 0.08 and 0.18 mas, respectively, at the quadrant level, and 3.4 and 5.6 mas at the source level. The corresponding internal and external photometric dispersions are 0.76 and 1.4 mmag at the quadrant level, and 11 and 25 mmag at the source level. We characterise remaining astrometric and photometric systematic effects: focal-plane-dependent variations; time-dependent photometric offsets; and colour-dependent centroid shifts. The noise floor in the deepest VIS images appears to be set by the extended diffuse light of faint galaxies. Globally, the DR1 VIS data meet pre-launch mission requirements and the 42092 images it contains provide our first substantial look at the sky as seen by VIS.
Authors 100
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
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Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
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Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Department of Physics, Centre for Extragalactic Astronomy, Durham University, South Road, Durham, DH1 3LE, UK
Department of Physics, Institute for Computational Cosmology, Durham University, South Road, Durham, DH1 3LE, UK
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Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
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Department of Physics, Institute for Computational Cosmology, Durham University, South Road, Durham, DH1 3LE, UK
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Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Universität Bonn, Argelander-Institut für Astronomie, Auf dem Hügel 71, 53121 Bonn, Germany
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
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Centre for Electronic Imaging, Open University, Walton Hall, Milton Keynes, MK7~6AA, UK
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Centre National de la Recherche Scientifique · Institut d'Astrophysique de Paris · Sorbonne Université
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Institut d'Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université, 98 bis boulevard Arago, 75014 Paris, France
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Department of Physics, Institute for Computational Cosmology, Durham University, South Road, Durham, DH1 3LE, UK
Department of Physics, Centre for Extragalactic Astronomy, Durham University, South Road, Durham, DH1 3LE, UK
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Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
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Centre National de la Recherche Scientifique · Université Paris Cité · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · Astrophysique, Instrumentation et Modélisation
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Centre National d'Études Spatiales
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Centre National d'Etudes Spatiales -- Centre spatial de Toulouse, 18 avenue Edouard Belin, 31401 Toulouse Cedex 9, France
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Centre National d'Études Spatiales
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Max Planck Institute for Astronomy
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Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
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Royal Observatory · University of Edinburgh
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Trieste Astronomical Observatory
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Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics
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Trieste Astronomical Observatory
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Royal Observatory · University of Edinburgh
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