Performance of the image persistence model for Euclid infrared detectors
Abstract
Large-format infrared detectors are at the heart of major ground and space-based astronomical instruments, and the HgCdTe HxRG is the most widely used. The Near Infrared Spectrometer and Photometer (NISP) of the ESA's Euclid mission launched in July 2023 hosts 16 H2RG detectors in the focal plane. Their performance relies heavily on the effect of image persistence, which results in residual images that can remain in the detector for a long time contaminating any subsequent observations. Deriving a precise model of image persistence is challenging due to the sensitivity of this effect to observation history going back hours or even days. Nevertheless, persistence removal is a critical part of image processing because it limits the accuracy of the derived cosmological parameters. We will present the empirical model of image persistence derived from ground characterization data, adapted to the Euclid observation sequence and compared with the data obtained during the in-orbit calibrations of the satellite.
Cite
@article{arxiv.2506.02775,
title = {Performance of the image persistence model for Euclid infrared detectors},
author = {B. Kubik and R. Barbier and G. Smadja and S. Ferriol and Y. Conseil and Y. Copin and W. Gillard and S. Dusini and K. Jahnke and E. Prieto and N. Auricchio and E. Balbi and A. Balestra and P. Battaglia and V. Capobianco and R. Chary and L. Corcione and F. Cogato and G. Delucchi and E. Franceschi and L. Gabarra and F. Gianotti and F. Grupp and E. Lentini and S. Ligori and E. Medinaceli and G. Morgante and K. Paterson and E. Romelli and L. Sauniere and M. Schirmer and C. Sirignano G. Testera and M. Trifoglio and A. Troja and L. Valenziano and M. Frailis and M. Scodeggio and J. -C. Barriere and M. Berthe and C. Bodendorf and A. Caillat and M. Carle and R. Casas and H. Cho and A. Costille and F. Ducret and B. Garilli and W. Holmes and F. Hormuth and A. Hornstrup and M. Jhabvala and R. Kohley and D. Le Mignant and P. B. Lilje and I. Lloro and C. Padilla and G. Polenta and J. -C. Salvignol and G. Seidel and B. Serra and A. Secroun and L. Stanco and R. Toledo-Moreo and S. Anselmi and E. Borsato and L. Caillat and C. Colodro-Conde and V. Conforti and J. E. Davies and A. Renzi and F. Dal Corso and S. Davini and A. Derosa and J. J. Diaz and S. Di Domizio and D. Di Ferdinando and R. Farinelli and A. G. Ferrari and F. Fornari and F. Giacomini and O. Krause and F. Laudisio and J. Macias-Perez and J. Marpaud and N. Mauri and R. da Silva and M. Niclas and F. Passalacqua and I. Risso and P. Lagier and A. N. Sorensen and P. Stassi and J. Steinwagner and M. Tenti and C. Thizy and S. Tosi and R. Travaglini and O. Tubio and C. Valieri and S. Ventura and C. Vescovi and J. Zoubian},
journal= {arXiv preprint arXiv:2506.02775},
year = {2025}
}
Comments
SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan