40-foot telescope
William Herschel's 40-foot telescope, also known as the Great Forty-Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 120-centimetre (47 in) diameter primary mirror with a 12-metre-long (1,200 cm) focal length (hence its name "Forty-Foot"). It was the largest telescope in the world for 50 years. It may have been used to discover Enceladus and Mimas, the 6th and 7th moons of Saturn. It was dismantled in 1840; today the original mirror and a 10-foot (3.0 m) section of the tube remain.
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40-foot telescope
William Herschel's 40-foot telescope, also known as the Great Forty-Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 120-centimetre (47 in) diameter primary mirror with a 12-metre-long (1,200 cm) focal length (hence its name "Forty-Foot"). It was the largest telescope in the world for 50 years. It may have been used to discover Enceladus and Mimas, the 6th and 7th moons of Saturn. It was dismantled in 1840; today the original mirror and a 10-foot (3.0 m) section of the tube remain.
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La Casa Osservatorio (in ingle ...... o stemma araldico di Herschel.
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Le télescope de 40 pieds de Wi ...... grandes icônes de l'astronomie
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William Herschel's 40-foot tel ...... m) section of the tube remain.
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تلسكوب الأربعين قدماً للفلكي ا ...... قع الذي تم بناء التلسكوب فية .
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ウィリアム・ハーシェルの40フィート望遠鏡は、同様に大40フ ...... 型の主鏡と10フィート (3.0 m)の鏡筒のみが現存する。
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Wikipage page ID
20,346,303
Wikipage revision ID
738,953,258
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La Casa Osservatorio (in ingle ...... o stemma araldico di Herschel.
@it
Le télescope de 40 pieds de Wi ...... r le Léviathan de Parsonstown.
@fr
William Herschel's 40-foot tel ...... m) section of the tube remain.
@en
تلسكوب الأربعين قدماً للفلكي ا ...... قع الذي تم بناء التلسكوب فية .
@ar
ウィリアム・ハーシェルの40フィート望遠鏡は、同様に大40フ ...... 型の主鏡と10フィート (3.0 m)の鏡筒のみが現存する。
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40-foot telescope
@en
40フィート望遠鏡
@ja
Casa Osservatorio
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Télescope de 40 pieds
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تلسكوب 40 قدم
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