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Publication of SU1837720A1publicationCriticalpatent/SU1837720A1/en
FIELD: optical astronomy. SUBSTANCE: telescope mirror is irradiated by visual range radiation from the center of curvature of the mirror. Thermal radiation of the mirror is filtered for spectrum. Image of the mirror is formed in IR range and transformed into visual image. Quality of optical surface is judged from the image formed. EFFECT: improved precision. 1 dwg
SU3183004/25A1987-10-281987-10-28Method of testing telescope mirror
SU1837720A1
(en)