ADJUSTING OPTICAL-SYSTEMS ON THE BASIS OF THE LINE SCATTERING FUNCTION

This paper discusses a method for calculating the adjusting motions of the elements of an optical system from the line scattering function ( LSF), in order to compensate aberrations that arise when the air gaps and decentering are disturbed. The method is based on the reconstructi on of the fourth-order aberrations of a perturbed optical system by me ans of nonlinear approximation of the LSF and uses global and local op timization elements. A model example is presented of the reconstructio n of the aberrations that arise in a telescope when the secondary mirr or is displaced along three degrees of freedom.