FIELD: calibration of optical instruments. SUBSTANCE: device can be put aboard satellite. Light source is placed into input hole or diaphragm hole of instrument for calibration of optical radiometric instrument which focal plane includes photoelectric detectors transforming illuminance of image to electric signal. EFFECT: improved reliability. 5 cl, 2 dwg
Authors
Dates
1997-06-27—Published
1990-12-21—Filed