Euclid
K. PatersonMax-Planck-Institut für AstronomieM SchirmerMax-Planck-Institut für AstronomieM. SchirmerMax-Planck-Institut für AstronomieB. VenemansLeiden Observatory, Leiden UniversityK. JahnkęIAS - Institut d'astrophysique spatiale (Bâtiment 121 91405 ORSAY CEDEX - France)N. AghanimUniversité Paris-SaclayB. AltieriESAC/ESAA. AmaraSchool of Mathematics and Physics, University of SurreyS. AndreonINAF – Osservatorio Astronomico di BreraC. BaccigalupiINAF-Osservatorio Astronomico di TriesteMarco BaldiDipartimento di Fisica e Astronomia, Università di BolognaA. BalestraINAF – Osservatorio Astronomico di PadovaSandro BardelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. BardelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaP. BattagliaINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaPietro BattagliaINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaA. BivianoINAF-Osservatorio Astronomico di TriesteA. BonchiUnited Kingdom Space AgencyE. BranchiniINAF – Osservatorio Astronomico di BreraM. BresciaINAF-Osservatorio Astronomico di CapodimonteMattia BresciaINAF-Osservatorio Astronomico di CapodimonteJ. BrinchmannFaculdade de Ciências da Universidade do PortoStefano CameraDipartimento di Fisica, Università degli Studi di TorinoS CameraINFN-Sezione di TorinoG Cañas-HerreraEuropean Space Agency/ESTECGuadalupe Cañas-HerreraLeiden Observatory, Leiden UniversityV. CapobiancoINAF-Osservatorio Astrofisico di TorinoJ. CarreteroPort d’Informació Científica, Campus UABSantiago CasasInstitute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen UniversityMarco CastellanoINAF – Osservatorio Astronomico di RomaM CastellanoINAF – Osservatorio Astronomico di RomaG. CastignaniINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaGerman CastignaniINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaStefano CavuotiNaples Anesthesia & Physician AssociatesS CavuotiINAF-Osservatorio Astronomico di CapodimonteK. C. ChambersInstitute for Astronomy, University of HawaiiA. CimattiDipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di BolognaC. Colodro-CondeInstituto de Astrofísica de CanariasC Colodro-CondeInstituto de Astrofísica de CanariasG. CongedoUniversity of EdinburghChristopher J. ConseliceJodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of ManchesterL ConversiEuropean Space Research InstituteLuca ConversiEuropean Space Agency/ESRINYannick CopinCentre National de la Recherche ScientifiqueY. CopinInstitut de Physique des 2 Infinis de LyonF CourbinInstitut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB)F. CourbinInstitute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL)H. M. CourtoisLyon CollegeA. Da SilvaInstituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências, Universidade de LisboaR. da SilvaSpace Science Data Center, Italian Space AgencyHubert DegaudenziDepartment of Astronomy, University of GenevaH. DegaudenziDepartment of Astronomy, University of GenevaG. De LuciaINAF-Osservatorio Astronomico di TriesteA. M. Di GiorgioINAF – Istituto di Astrofisica e Planetologia SpazialiJ. DinisInstituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências, Universidade de LisboaH. DoleInstitut d'Astrophysique SpatialeF. DubathDepartment of Astronomy, University of GenevaX. DupacESAC/ESAS. DusiniINFN – PadovaA. EaletInstitute of Nuclear Physics of LyonStephanie EscoffierAix-Marseille Université, CNRS/IN2P3, CPPMS. EscoffierAix-Marseille Université, CNRS/IN2P3, CPPMMarcelo FarinaINAF – Istituto di Astrofisica e Planetologia SpazialiR. FarinelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaR FarinelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaF. FaustiniUnited Kingdom Space AgencyS. FerriolUniversité Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822Francesco FinelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaF. Finelli⋆INFN – BolognaS. FotopoulouSchool of Physics, HH Wills Physics Laboratory, University of BristolN. FourmanoitCPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)Nicolas FourmanoitAix-Marseille Université, CNRS/IN2P3, CPPMM. FrailisINAF-Osservatorio Astronomico di TriesteE. FranceschiINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaP. FranzettiINAF – IASF MilanoS. GaleottaINAF-Osservatorio Astronomico di TriesteKoshy GeorgeUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenK GeorgeUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenW. GillardCPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)B. GillisUniversity of EdinburghC. GiocoliINFN – Sezione di BolognaJ. Gracia-CarpioMax Planck Institute for Extraterrestrial PhysicsB. R. GranettINAF – Osservatorio Astronomico di BreraA. GrazianINAF – Osservatorio Astronomico di PadovaF. GruppUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenL. GuzzoINFN-Sezione di MilanoLuigi GuzzoINFN-Sezione di MilanoS. V. H. HauganInstitute of Theoretical PhysicsHenk HoekstraLeiden Observatory, Leiden UniversityWarren HolmesJet Propulsion Laboratory, California Institute of TechnologyW. HolmesJet Propulsion Laboratory, California Institute of TechnologyF. HormuthFelix Hormuth EngineeringA. HornstrupTechnical University of DenmarkP. HudelotIAP - Institut d'Astrophysique de Paris (98bis, bd Arago - 75014 Paris France - France)M. JhabvalaNASA Goddard Space Flight CenterE. KeihänenSmain KermicheAix-Marseille Université, CNRS/IN2P3, CPPMS. KermicheCPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)A. KiesslingJet Propulsion Laboratory, California Institute of TechnologyR. KohleyESAC/ESAB. KubikInstitut de Physique des 2 Infinis de LyonM KümmelUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenM. KunzUniversité de Genève, Département de Physique Théorique and Centre for Astroparticle PhysicsMartin KunzUniversité de Genève, Département de Physique Théorique and Centre for Astroparticle PhysicsHannu Kurki-SuonioDepartment of PhysicsH. Kurki‐SuonioDepartment of PhysicsA. M. C. Le BrunLUX - Laboratoire d’étude de l’Univers et des phénomènes eXtrèmes (Site de Meudon :
5, place Jules Janssen
92195 MEUDON.
Site de Paris :
61, av. de l’Observatoire
75014 PARIS. - France)D. Le MignantLAM - Laboratoire d'Astrophysique de Marseille (Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13 - France)S LigoriINAF-Osservatorio Astrofisico di TorinoSebastiano LigoriINAF-Osservatorio Astrofisico di TorinoP. B. LiljeInstitute of Theoretical Astrophysics, University of OsloV. LindholmDepartment of PhysicsI. LloroSKA Observatory, Jodrell Bank, Lower Withington, MacclesfieldG. MainettiCentre de Calcul de l’IN2P3/CNRSD. MainoINAF – IASF MilanoE. MaioranoINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaO. MansuttiINAF-Osservatorio Astronomico di TriesteS. MarcinUniversity of Applied Sciences and Arts of Northwestern Switzerland, School of EngineeringO. MarggrafUniversität Bonn, Argelander-Institut für AstronomieOle MarggrafUniversität Bonn, Argelander-Institut für AstronomieK. MarkovičJet Propulsion Laboratory, California Institute of TechnologyM. MartinelliNational Institute for AstrophysicsNadine MartinetAix-Marseille Université, CNRS, CNES, LAMN. MartinetChâteau GombertF. MarulliDipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di BolognaR MasseyR. Massey
ABI
Annotatsiya
The Near-Infrared Spectrometer and Photometer (NISP) on board Euclid includes several optical elements in its path that introduce artefacts into the data from non-nominal light paths. To ensure uncontaminated source photometry, these artefacts must be accurately accounted for. This paper focuses on two specific optical features in NISP’s photometric data (NISP-P): ghosts caused by the telescope’s dichroic beamsplitter, and the bandpass filters within the NISP fore-optics. Both ghost types exhibit a characteristic morphology and are offset from the originating stars. The offsets are well modelled using 2D polynomials; only stars brighter than approximately 10 magnitudes in each filter produce significant ghost contributions. The masking radii for these ghosts depend on both the source-star brightness and the filter wavelength, ranging from 20 to 40 pixels. We present the final relations and models used in the near-infrared (NIR) processing function (PF) to mask these ghosts for Euclid ’s Quick Data Release (Q1).
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