title: Primary aberrations for grazing incidence.
abstract: Beginning with exact relations between-object and image coordinates for a single reflective surface, a systematic analysis of general grazing incidence systems is presented. A complete set of primary aberrations for single-element and two-element systems is developed. The importance of a judicious choice for a coordinate system in showing field curvature to be clearly the predominant aberration for a two-element system is discussed. The validity of the theory is verified through comparisons with the exact ray-trace results for the case of a telescope.
authors.forename: C E
authors.initials: CE
authors.lastname: Winkler
authors.forename: D
authors.initials: D
authors.lastname: Korsch