Lord Rosse's great 72-inch (1.828m) diameter reflecting

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 Earth's rotation provided movement in an east-west direction. Engraving from A Handbook of Descriptive Astronomy by George F Chambers (Oxford, 1890). William Parsons, 3rd Earl of Rosse (1800-1867)

Chambers Descriptive Diameter East-west Handbook Leviathan North-south Parsons Parsonstown Provided Reflecting Rosse Rotation Telescope

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