Chromatic drift of the Espresso Fabry-Pérot etalon Tobias M. Schmidt, Bruno Chazelas, Christophe Lovis, Xavier Dumusque, François Bouchy, Francesco Pepe, Pedro Figueira and Danuta Sosnowska A&A, 664 (2022) A191 Published online: 31 August 2022 DOI: 10.1051/0004-6361/202243270