A model-based approach to the spatial and spectral calibration of NIRSpec onboard JWST B. Dorner, G. Giardino, P. Ferruit, C. Alves de Oliveira, S. M. Birkmann, T. Böker, G. De Marchi, X. Gnata, J. Köhler, M. Sirianni and P. Jakobsen A&A, 592 (2016) A113 Published online: 09 August 2016 DOI: 10.1051/0004-6361/201628263