title: Coma canceling monochromator with no slit mismatch.
abstract: A new plane grating monochromator is described which uses off-axis parabolas. The optical arrangement is such that extremely sharp spectral line images of constant curvature are realized at mirror angles large enough to prohibit the possibility of multiple dispersion.
authors.forename: V L
authors.initials: VL
authors.lastname: Chupp
authors.forename: P C
authors.initials: PC
authors.lastname: Grantz