PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Poster Session
Pre-launch optical verification of the Euclid NISP instrument and comparison with simulated images
L. Gabarra* and  On behalf of the Euclid Consortium
Full text: pdf
Pre-published on: December 02, 2022
Published on: June 15, 2023
To characterise the NISP (Near-Infrared Spectrometer and Photometer) instrument optical capability before the launch of the Euclid telescope to orbit, foreseen in 2023, data analysis of
ground-based tests and Monte Carlo simulations that mimic the expected NISP performance were carried out. Pre-launch test datawere analysed to assess the fulfilment of the mission specifications in terms of Point Spread Function (PSF), set at EE50(PSF) ≤ 0′.′3, and with a spectral resolution below 16Åpx−1. We also provide a first comparison between real images from the ground-based tests with simulated ones. We confirm the high optical quality of the NISP instrument, fulfilling the mission specifications in terms of PSF and spectral dispersion with a good agreement between the different test campaigns. We validated the PSF and spectral dispersion provided by the NISP simulator, a crucial aspect to validate the consistency between real and simulated images.
DOI: https://doi.org/10.22323/1.414.1220
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