title: Optimized superstationary anastigmatic mounts of concave gratings.
abstract: Two subfamilies of concave grating superstationary anastigmatic mounts that provide minimum chromatic aberrations are described. The obtained approximate formulas can be used to design flat-field spectrographs and multi/demultiplexers for optical communication networks. Two specific mounts and their performance are presented.
authors.forename: E G
authors.initials: EG
authors.lastname: Churin
authors.forename: P
authors.initials: P
authors.lastname: Bayvel
authors.forename: J E
authors.initials: JE
authors.lastname: Midwinter