An apparatus for analyzing the size of a step of a pair of telescopes in a telescope

摘要

Problem to be solved: to provide an apparatus for accurately analyzing the size of a step of a pair of divided mirrors of a telescope having a main mirror such as a reflecting telescope.An apparatus for analyzing the size of a step in a pair of divided mirrors of a telescope comprising a plurality of split mirrorsIn the optical axis of the main mirror, a divided mirror image projected from each of the split mirrors is disposed perpendicular to the optical axis at a predetermined position where the non overlapping mirror image is not overlapped.In each position of a split mirror imageA mask comprising a pair of opposed main slits formed at a predetermined interval in the vicinity of the boundaries of the respective divided mirror images of the pair of split mirrors, respectivelyThe mask isFor each of the main slit pairsAt least one reference slit having a predetermined angle not parallel to it is disposed.