Lord Rosse's reflecting telescope

Numéro d’image : 11726623
Lord Rosse's reflecting telescope
Lord Rosse's great 72-inch (1.828m) diameter reflecting telescope of 1845,called the Leviathan of Parsonstown. Mounted between two brick walls,it could move only in a north-south direction. The instrument viewed from the south,showing the position of the when a man entered the tube to fix the small speculum and to remove the cover of the large one for the night's work. The Earth's rotation provided movement in an east-west direction. From his paper 'On the Construction of Specula of Six-feet Aperture' in Philosophical Transactions of the Royal Society (London,1849). William Parsons,3rd Earl of Rosse (1800-1867)
Licence : Droits gérés
Crédit: Science Photo Library / UIG / Universal History Archive
Taille de l’image : 3294 px × 2661 px
Model Release : Non requis
Property Release : Non requis
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