Compact, astigmatism corrected cross-grating spectrometer Matthias Kraus, Erik Förster, Verena Bagusat, Tobias Hönle, Xavier Uwurukundo, Patrick Bohnert, Robert Brüning, Hartmut Hillmer and Robert Brunner EPJ Web Conf., 238 (2020) 03005 Published online: 20 August 2020 DOI: 10.1051/epjconf/202023803005