Multi-CCD modelling of the point spread function T. Liaudat, J. Bonnin, J.-L. Starck, M. A. Schmitz, A. Guinot, M. Kilbinger and S. D. J. Gwyn A&A, 646 (2021) A27 Published online: 03 February 2021 DOI: 10.1051/0004-6361/202039584