Position of the entrance pupil of an optical system made from two reflecting surfaces with isoplanatic and anastigmatic correction of primary aberrations

摘要

This paper shows that not only aplanatic but also anastigmatic (plananastigmatic) correction of the aberrations can be achieved in the image formed by an optical system that consists of two reflecting surfaces of spherical shape, with an afocal aberration compensator made from two thin lenses located in parallel pencils of rays in front of the mirror system.