Floating zenith telescope
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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 |
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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 |
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