Specifics of the design of the optical system of an astrograph for the Interplanetary Solar Stereoscopic Observatory Project

摘要

The requirements on the optical system of the astrograph for the Interplanetary Solar Stereoscopic Observatory are determined. Versions of orthoscopic optical systems of telescope objectives are considered, and a technique is presented for designing three-mirror objectives with corrected spherical aberration, coma, astigmatism, image curvature, and distortion. Screening in the resulting systems is determined. The results of a design of the astrograph with a focal length of 5 m, an f number of 10, and an angular field in object space of 1 degrees are presented as an example. (c) 2007 Optical Society of America.