Automatic star tracking device (English: star tracker)

Japanese: 恒星自動追尾装置 - こうせいじどうついびそうち(英語表記)star tracker
Automatic star tracking device (English: star tracker)
Most astronomical observation equipment has a mechanism for tracking the movement of celestial bodies. Astronomical telescopes on the ground use equatorial mounts and clocks to track the diurnal motion of celestial bodies with a fairly good degree of accuracy. Large radio telescopes are mounted on altitudinal mounts and are controlled by computers. In recent years, computer control of astronomical observation equipment has advanced significantly, and by correcting for telescope deflection and atmospheric refraction, a tracking error of a few arc seconds can be achieved regardless of whether the telescope is equatorial or altitudinal.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
天体観測装置の多くは天体の動きを追尾する機構をもつ。地上におかれた天体望遠鏡は赤道儀式架台と時計装置によってほぼ十分な精度で天体の日周運動を追尾する。大型の電波望遠鏡は経緯儀式架台に乗せられているが,コンピューターを使って制御が行われている。近年,天体観測装置のコンピューター制御はきわめて進歩し,望遠鏡のたわみや大気差による補正をすることによって,赤道儀式,経緯儀式を問わず数秒角の追尾誤差が実現されている。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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