| 摘要 |
PURPOSE:To enable to perform a correct measuring of a position of a star, by a method wherein, in addition to an output signal corresponding to a direction of a star to be measured, an output signal, corresponding to a reference cordinate of a visual field of a star sensor, is generated. CONSTITUTION:Lights from a star are collected by means of an optical system 1 to form an image on a light-sensitive surface 4 of a photoelectric transducer 2. Lights from a pseudo-light ray 7, which a reflection mirror 8 reflects, are guided into a visual field and are collected by means of the optical system 1 like the lights from the star to form an image on the light-sensitive surface 4. The star sensor generates an output signal, being produced into a cordinate reference by the pseudo-star light source 7, toward the visual field of the star sensor in addition to an output signal generated corresponding to a direction of a star by means of the photoelectric transducer consisting of an image detector tube and an electric circuit. Thus, a reference cordinate, corrsponding to the visual filed of the star sensor, is obtained, and this enables a simple correction of an error generates due to the optical system 1 and the photoelectric transducer 2. |
