Abstract
Utilizing the photon counter to register the star through the 60° altitude and a microcomputer to control the telescope pointing, the automatization was attained in the observation of type II photoelectric astrolabe. The limiting magnitude of the improved astrolabe is up to 11.0 and the precision of single determination is ± 0.2 arc — sec. This automatic instrument is more powerful in improving the FK5 system and expanding the current optical celestial system into faint stars.
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