title: Schwarzschild spectrometer.
abstract: This is a proposal and description of a new spectrometer based on the Schwarzschild optical system. The proposed design contains two Schwarzschild optical systems. Light diverging from the spectrometer entrance slit is collimated by the first one; the collimated light beam hits a planar diffraction grating and the light dispersed from the grating is focused by the second system, which is concentric with the first. A very simple procedure obtains designs that are anastigmatic for the center of the slit and for a particular wavelength. A specific example shows the performance of this type of spectrometer.
authors.affiliation: Departamento de Física Aplicada, Escola Universitaria de Óptica e Optometría, Universidade de Santiago de Compostela, Galicia, Spain.
authors.forename: M Dolores
authors.initials: MD
authors.lastname: Mouriz
authors.forename: Elena López
authors.initials: EL
authors.lastname: Lago
authors.forename: Xesús
authors.initials: X
authors.lastname: Prieto-Blanco
authors.forename: Héctor
authors.initials: H
authors.lastname: González-Núñez
authors.forename: Raúl
authors.initials: R
authors.lastname: de la Fuente