METHOD OF TESTING TELESCOPE MIRROR Russian patent published in 1995 - IPC

FIELD: optical location. SUBSTANCE: point source radiation is received by telescope and dependence is registered on intensity on time of radiation received in dissipation circle, when the circle is conjugated with mirror 4. The dependence is defined by means of the photodetector 5 and recorded in storage 12. Image of mirror 4 is formed at input of image intensifier tube 7 by means of lens 6 in radiation of point source which is screened by mirror 4. The image is read out by means of TV camera 8. Time dependence is registered as well as distribution of radiation intensity at image when imaging surface of mirror of the telescope. Quality of surface of telescope mirror is judged from intensity distribution. EFFECT: improved efficiency. 1 dwg