Floating zenith telescope

Japanese: 浮遊天頂儀 - ふゆうてんちょうぎ（英語表記）floating zenith telescope
Floating zenith telescope
When installing a zenith telescope for precise observation of stars that reach their highest point near the zenith, in order to avoid the inconvenience of using a spirit level to adjust the level, the support part is floated in a mercury tank, allowing high-precision observations to be made using photography.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
天頂付近で南中する恒星を精密観測する天頂儀の据付けの際，水準器で水平を出す不便を避けるため，支持部を水銀槽に浮べ，写真を用いて高精度の観測が行えるようにしたもの。

出典　ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について　情報

<<:  Suspended solid (SS)

>>:  Flotation process

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