title: Correction of spherical aberration in an interferometric system with nonzero difference between optical paths and fringeless observation field.
abstract: The influence of fifth-order spherical aberration in the measurement error in an interferometer system is analyzed. The criterion of the aberration correction and the optimum correction are proposed. The influence of the focusing error and the wave tilt as the adjustment errors are determined. As a practical example, the optimum wave spherical aberration, optimum longitudinal spherical aberration and the error distribution in the observation field are given.
authors.forename: R
authors.initials: R
authors.lastname: Jozwicki