A tower-shaped telescope used primarily for spectroscopic studies of solar radiation. A coelostat at the top of the telescope guides the solar radiation underground through the tower, where it is broken down into a spectrum by a spectroscope. The focal length of the imaging system is 10 to 15 meters, and the radiation is dispersed to more than 1 mm per 1 Å, making it possible to study the fine structure of the spectrum. The tower telescope at the Potsdam Observatory in Germany, built to measure the redshift of the solar spectrum due to the general theory of relativity, is particularly famous and is known as the Einstein Tower. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
主として太陽光線の分光学的研究に使われる塔形の望遠鏡。その上部のシーロスタットにより,塔の内部を通って地下へ導いた太陽光線を分光器によってスペクトルに分解する装置で,結像系の焦点距離は 10~15m,1Åにつき 1mm以上に分散させ,スペクトルの微細な構造を研究することができる。一般相対性理論による太陽スペクトルの赤方偏移を測定するために建てられたドイツのポツダム天文台の塔望遠鏡は特に有名で,これはアインシュタイン塔と呼ばれる。
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