<i>Euclid</i>: High-precision imaging astrometry and photometry from Early Release Observations
The instruments at the focus of the Euclid space observatory offer superb, diffraction-limited imaging over an unprecedented (from space) wide field of view of 0.57 deg 2 . This exquisite image quality has the potential to produce high-precision astrometry for point sources once the undersampling of Euclid’s cameras is taken into account by means of accurate, effective point spread function (ePSF) modelling. We present a complex, detailed workflow to simultaneously solve for the geometric distortion (GD) and model the undersampled ePSFs of the Euclid detectors. Our procedure was successfully developed and tested with data from the Early Release Observations (ERO) programme focused on the nearby globular cluster NGC 6397. Our final one-dimensional astrometric precision for a well-measured star just below saturation is 0.7 mas (0.007 pixel) for the Visible Instrument (VIS) and 3 mas (0.01 pixel) for the Near-Infrared Spectrometer and Photometer (NISP). Finally, we present a specific scientific application of this high-precision astrometry: the combination of Euclid and Gaia data to compute proper motions and study the internal kinematics of NGC 6397. Future work, when more data become available, will allow for a better characterisation of the ePSFs and GD corrections that are derived here, along with assessment of their temporal stability, and their dependencies on the spectral energy distribution of the sources as seen through the wide-band filters of Euclid .
Authors
- G. Seidel (ORCID: https://orcid.org/0000-0003-2907-353X)
- J. Brinchmann (ORCID: https://orcid.org/0000-0003-4359-8797)
- S. S. Larsen (ORCID: https://orcid.org/0000-0003-0069-1203)
- Will J. Percival (ORCID: https://orcid.org/0000-0002-0644-5727)
- R. P. Saglia
- P. Tallada-Crespí (ORCID: https://orcid.org/0000-0002-1336-8328)
- P. Hudelot
- G. Riccio (ORCID: https://orcid.org/0000-0001-7020-1172)
- L. Conversi
- D. Le Mignant (ORCID: https://orcid.org/0000-0002-5339-5515)
- C. Sirignano
- M. Brescia (ORCID: https://orcid.org/0000-0001-9506-5680)
- E. Merlin (ORCID: https://orcid.org/0000-0001-6870-8900)
- M. Kunz
- C. Baccigalupi (ORCID: https://orcid.org/0000-0002-8211-1630)
- Jay Anderson (ORCID: https://orcid.org/0000-0003-2861-3995)
- J. Carretero (ORCID: https://orcid.org/0000-0002-3130-0204)
- M. Schirmer (ORCID: https://orcid.org/0000-0003-2568-9994)
- J. Steinwagner
- F. Marulli (ORCID: https://orcid.org/0000-0002-8850-0303)
- D. Scott (ORCID: https://orcid.org/0000-0002-6878-9840)
- C. Giocoli (ORCID: https://orcid.org/0000-0002-9590-7961)
- O. Marggraf (ORCID: https://orcid.org/0000-0001-7242-3852)
- Matteo Correnti (ORCID: https://orcid.org/0000-0001-6464-3257)
- F. Courbin (ORCID: https://orcid.org/0000-0003-0758-6510)
- Y. Copin
- A. Kiessling (ORCID: https://orcid.org/0000-0002-2590-1273)
- Santiago Casas (ORCID: https://orcid.org/0000-0002-4751-5138)
- F. Grupp
- A. Grazian (ORCID: https://orcid.org/0000-0002-5688-0663)
- M. Jhabvala
- F. Torradeflot (ORCID: https://orcid.org/0000-0003-1160-1517)
- D. Massari (ORCID: https://orcid.org/0000-0001-8892-4301)
- G. Sirri (ORCID: https://orcid.org/0000-0003-2626-2853)
- S. Mei (ORCID: https://orcid.org/0000-0002-2849-559X)
- S. Bardelli (ORCID: https://orcid.org/0000-0002-8900-0298)
- F Faustini
- Harry I. Teplitz (ORCID: https://orcid.org/0000-0002-7064-5424)
- E. Sefusatti (ORCID: https://orcid.org/0000-0003-0473-1567)
- M. Martinelli (ORCID: https://orcid.org/0000-0002-6943-7732)
- Alberto Basset (ORCID: https://orcid.org/0000-0002-3603-9316)
- A. Amara
- V. Capobianco
- W Holmes
- L. Moscardini (ORCID: https://orcid.org/0000-0002-3473-6716)
- Alexandre Réfrégier (ORCID: https://orcid.org/0000-0003-3416-9317)
- T. Schrabback (ORCID: https://orcid.org/0000-0002-6987-7834)
- S. Farrens (ORCID: https://orcid.org/0000-0002-9594-9387)
- G. Meylan
- T. Saifollahi (ORCID: https://orcid.org/0000-0002-9554-7660)
- E. Zucca (ORCID: https://orcid.org/0000-0002-5845-8132)
- S. Andreon (ORCID: https://orcid.org/0000-0002-2041-8784)
- S. Pires (ORCID: https://orcid.org/0000-0002-0249-2104)
- S. V. H. Haugan
- R. Massey (ORCID: https://orcid.org/0000-0002-6085-3780)
- T. Vassallo
- S. Paltani (ORCID: https://orcid.org/0000-0002-8108-9179)
- R. Toledo-Moreo
- M. Moresco
- J. Skottfelt (ORCID: https://orcid.org/0000-0003-1310-8283)
- D. Sapone (ORCID: https://orcid.org/0000-0001-7089-4503)
- M. Meneghetti (ORCID: https://orcid.org/0000-0003-1225-7084)
- D. Bonino (ORCID: https://orcid.org/0000-0002-3336-9977)
- R. L. Smart (ORCID: https://orcid.org/0000-0002-4424-4766)
- J.W Nightingale (ORCID: https://orcid.org/0000-0002-8987-7401)
- A. Veropalumbo (ORCID: https://orcid.org/0000-0003-2387-1194)
- M. Poncet
- G. Congedo (ORCID: https://orcid.org/0000-0003-2508-0046)
- L. Valenziano (ORCID: https://orcid.org/0000-0002-1170-0104)
- A. Caillat
- C Colodro-Conde
- Mattia Libralato (ORCID: https://orcid.org/0000-0001-9673-7397)
- E. Romelli (ORCID: https://orcid.org/0000-0003-3069-9222)
- C. Burigana (ORCID: https://orcid.org/0000-0002-3005-5796)
- Christopher J. Conselice (ORCID: https://orcid.org/0000-0003-1949-7638)
- Henk Hoekstra (ORCID: https://orcid.org/0000-0002-0641-3231)
- I. Tutusaus (ORCID: https://orcid.org/0000-0002-3199-0399)
- H. Degaudenzi (ORCID: https://orcid.org/0000-0002-5887-6799)
- O. Mansutti
- G. Zamorani (ORCID: https://orcid.org/0000-0002-2318-301X)
- N. Martinet (ORCID: https://orcid.org/0000-0003-2786-7790)
- W. Gillard (ORCID: https://orcid.org/0000-0003-4744-9748)
- M. Griggio (ORCID: https://orcid.org/0000-0002-5060-1379)
- C. Padilla Aranda (ORCID: https://orcid.org/0000-0001-7951-0166)
- E. Maiorano (ORCID: https://orcid.org/0000-0003-2593-4355)
- Denis Erkal
- A. Tsyganov (ORCID: https://orcid.org/0000-0002-8857-6287)
- B. Gillis (ORCID: https://orcid.org/0000-0002-4478-1270)
- M. Roncarelli (ORCID: https://orcid.org/0000-0001-9587-7822)
- F. Dubath (ORCID: https://orcid.org/0000-0002-6533-2810)
- V. Scottez
- A. Hornstrup (ORCID: https://orcid.org/0000-0002-3363-0936)
- E. Medinaceli (ORCID: https://orcid.org/0000-0002-4040-7783)
- Maximilian Fabricius (ORCID: https://orcid.org/0000-0002-7025-6058)
- A. Lançon (ORCID: https://orcid.org/0000-0002-7214-8296)
- A. Balestra (ORCID: https://orcid.org/0000-0002-6967-261X)
- K. Jahnkę (ORCID: https://orcid.org/0000-0003-3804-2137)
- B. Altieri (ORCID: https://orcid.org/0000-0003-3936-0284)
- A. Secroun
- M. Farina (ORCID: https://orcid.org/0000-0002-3089-7846)
- F. Pasian (ORCID: https://orcid.org/0000-0002-4869-3227)
- L. Guzzo
- G. Battaglia (ORCID: https://orcid.org/0000-0002-6551-4294)
- J. Weller (ORCID: https://orcid.org/0000-0002-8282-2010)
- S. Ligori (ORCID: https://orcid.org/0000-0003-4172-4606)
- M. Castellano (ORCID: https://orcid.org/0000-0001-9875-8263)
- P. Fosalba (ORCID: https://orcid.org/0000-0002-1510-5214)
- S. Galeotta
- F. Raison (ORCID: https://orcid.org/0000-0002-7819-6918)
- M. Melchior
- E. Franceschi
- Marco Baldi (ORCID: https://orcid.org/0000-0003-4145-1943)
- P. Gómez-Álvarez (ORCID: https://orcid.org/0000-0002-8594-5358)
- Ariel G. Sánchez (ORCID: https://orcid.org/0000-0003-1198-831X)
- E. Dalessandro (ORCID: https://orcid.org/0000-0003-4237-4601)
- S. Dusini (ORCID: https://orcid.org/0000-0002-1128-0664)
- K. Markovič
- K. Pedersen
- B. Garilli (ORCID: https://orcid.org/0000-0001-7455-8750)
- S. Camera (ORCID: https://orcid.org/0000-0003-3399-3574)
- Z. Sakr
- M. Kilbinger (ORCID: https://orcid.org/0000-0001-9513-7138)
- J. Dinis (ORCID: https://orcid.org/0000-0001-5075-1601)
- V. Lindholm
- Jason Rhodes (ORCID: https://orcid.org/0000-0002-4485-8549)
- M. Sauvage (ORCID: https://orcid.org/0000-0002-0809-2574)
- G. Verdoes Kleijn (ORCID: https://orcid.org/0000-0001-5803-2580)
- M. Cropper (ORCID: https://orcid.org/0000-0003-4571-9468)
- R. Nakajima
- E. Keihänen (ORCID: https://orcid.org/0000-0003-1804-7715)
- B. Sartoris
- G. Castignani (ORCID: https://orcid.org/0000-0001-6831-0687)
- Koshy George (ORCID: https://orcid.org/0000-0002-1734-8455)
- S. Cavuoti (ORCID: https://orcid.org/0000-0002-3787-4196)
- M. Frailis (ORCID: https://orcid.org/0000-0002-7400-2135)
- Jean‐Charles Cuillandre (ORCID: https://orcid.org/0000-0002-3263-8645)
- M. Fumana
- Petra Schneider (ORCID: https://orcid.org/0000-0001-8561-2679)
- C. Carbone
- F. Annibali (ORCID: https://orcid.org/0000-0003-3758-4516)
- S. Kermiche
- S. Ferriol
- L. R. Bedin (ORCID: https://orcid.org/0000-0003-4080-6466)
- E. Balbinot (ORCID: https://orcid.org/0000-0002-1322-3153)
- V. Pettorino
- P. B. Lilje
- S. Serrano (ORCID: https://orcid.org/0000-0002-0211-2861)
- G. Polenta (ORCID: https://orcid.org/0000-0003-4067-9196)
- E. Rossetti (ORCID: https://orcid.org/0000-0003-0238-4047)
- E. Branchini (ORCID: https://orcid.org/0000-0002-0808-6908)
- P. B. Kuzma (ORCID: https://orcid.org/0000-0003-1980-8838)
- M. Kümmel (ORCID: https://orcid.org/0000-0003-2791-2117)
- L. Pozzetti (ORCID: https://orcid.org/0000-0001-7085-0412)
- G. De Lucia (ORCID: https://orcid.org/0000-0002-6220-9104)
- H. M. Courtois (ORCID: https://orcid.org/0000-0003-0509-1776)
- R. C. Nichol (ORCID: https://orcid.org/0000-0003-0939-6518)
- Yun Wang (ORCID: https://orcid.org/0000-0002-4749-2984)
- A. Da Silva (ORCID: https://orcid.org/0000-0002-6385-1609)
- L. Stančo (ORCID: https://orcid.org/0000-0002-9706-5104)
- Andy Taylor
- M. D. Seiffert (ORCID: https://orcid.org/0000-0002-7536-9393)
- Y. Mellier
- F. Hormuth (ORCID: https://orcid.org/0000-0002-3363-0936)
- L. Popa
- I. Tereno (ORCID: https://orcid.org/0000-0002-4537-6218)
- R. Rebolo
- P Battaglia
- H. Kurki‐Suonio
- R. Laureijs (ORCID: https://orcid.org/0000-0001-9897-9779)
- C. Neissner
- B. Kubik (ORCID: https://orcid.org/0009-0006-5823-4880)
- A Cimatti
- S.-M Niemi
- A. M. Ferguson
- I. Lloro
- X. Dupac
- A. Renzi
Institutions
- Université Claude Bernard Lyon 1 (FR)
- University of Geneva (CH)
- Institució Catalana de Recerca i Estudis Avançats (ES)
- Leiden University (NL)
- California Institute of Technology (US)
- University of Copenhagen (DK)
- Centre National de la Recherche Scientifique (FR)
- Space Telescope Science Institute (US)
- Goddard Space Flight Center (US)
- Institute of Space Sciences (ES)
- Jet Propulsion Laboratory (US)
- University of Helsinki (FI)
- Université Toulouse III - Paul Sabatier (FR)
- Consejo Superior de Investigaciones Científicas (ES)
- University of Bonn (DE)
- Scuola Internazionale Superiore di Studi Avanzati (IT)
- University of Padua (IT)
- University of Hertfordshire (GB)
- University of Lisbon (PT)
- University of British Columbia (CA)
- University of Trieste (IT)
- Radboud University Nijmegen (NL)
- University of Waterloo (CA)
- Universidad de La Laguna (ES)
- University of Groningen (NL)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- Universidade do Porto (PT)
- Perimeter Institute (CA)
- University of Oslo (NO)
- Institute for High Energy Physics (ES)
- University of Milan (IT)
- Durham University (GB)
- Universität Innsbruck (AT)
- University of Saint Joseph (US)
- The Open University (GB)
- Université Paris Cité (FR)
- Aix-Marseille Université (FR)
- Heidelberg University (DE)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- Centre National d'Études Spatiales (FR)
- Helsinki Institute of Physics (FI)
- Astronomical Observatory of Rome (IT)
- Agenzia Spaziale Italiana (IT)
- Trieste Astronomical Observatory (IT)
- Institut d'Astrophysique de Paris (FR)
- Astronomical Observatory of Capodimonte (IT)
- Laboratoire AstroParticule et Cosmologie (FR)
- Observatoire astronomique de Strasbourg (FR)
- Brera Astronomical Observatory (IT)
- University of Surrey (GB)
- University of Manchester (GB)
- FHNW University of Applied Sciences and Arts Northwestern Switzerland (CH)
- Universidad Politécnica de Cartagena (ES)
- ETH Zurich (CH)
- Sorbonne Université (FR)
- Técnicas Reunidas (Spain) (ES)
- Astrophysique, Instrumentation et Modélisation (FR)
- Institute of Astrophysics and Space Sciences (PT)
- Max Planck Institute for Extraterrestrial Physics (DE)
- Institut d'Estudis Espacials de Catalunya (ES)
- European Space Astronomy Centre (ES)
- Istituto Nazionale di Fisica Nucleare, Sezione di Torino (IT)
- Institute for Space Astrophysics and Planetology (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT)
- Osservatorio Astrofisico di Torino (IT)
- Royal Observatory (GB)
- Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (IT)
- Max Planck Institute for Astronomy (DE)
- Istituto di Radioastronomia di Bologna (IT)
- Unidades Centrales Científico-Técnicas (ES)
- Université Bourgogne Franche-Comté (FR)
- Istituto Nazionale di Fisica Nucleare, Sezione di Genova (IT)
- CEA Paris-Saclay (FR)
- Instituto de Astrofísica de Canarias (ES)
- Institut National de Physique Nucléaire et de Physique des Particules (FR)
- Institute of Space Science - INFLPR Subsidiary (RO)
- Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT)
- Port d'Informació Científica (ES)
- Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT)
- Institute for Fundamental Physics of the Universe (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT)
- Osservatorio Astronomico di Padova (IT)
- National Astronomical Observatory of Japan (JP)
- European Space Research Institute (IT)
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (ES)
- Institut de Recherche en Astrophysique et Planétologie (FR)
- Infrared Processing and Analysis Center (US)
- Osservatorio di Astrofisica e Scienza dello Spazio
- European Space Research and Technology Centre (NL)
- University College London (GB)
- École Polytechnique Fédérale de Lausanne (CH)
- University of Turin (IT)
- University of Portsmouth (GB)
- Université de Strasbourg (FR)
- University of Chile (CL)
- Heidelberg Institute for Theoretical Studies (DE)
- Universitat de Barcelona (ES)
- Ludwig-Maximilians-Universität München (DE)
- University of Genoa (IT)
- Newcastle University (GB)
- National Institute for Astrophysics (IT)
- RWTH Aachen University (DE)
- Netherlands Institute for Radio Astronomy (NL)
- University of Bologna (IT)
- Universitat Politècnica de Catalunya (ES)
- Technical University of Denmark (DK)
- American University of Beirut (LB)
- University of Edinburgh (GB)
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2024-12-01
- DOI
- https://doi.org/10.1051/0004-6361/202452295
- Citations
- 6
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 1.99
Funders
- National Aeronautics and Space Administration
- European Space Agency
- Magyar Tudományos Akadémia
- Agenzia Spaziale Italiana
- National Astronomical Observatory of Japan
- Agenția Spațială Română
- Norsk Romsenter
- Science and Technology Facilities Council
- Fundação para a Ciência e a Tecnologia