Great Astronomers: William Parsons (3rd Earl of Rosse)
(Reklamlänk)
William Parsons, the 3rd Earl of Rosse, (1800–1867) was an Anglo-Irish astronomer who made several large telescopes. His 72-inch telescope, the "Leviathan", built in 1845, was the world's largest telescope until the early 20th century. The 72-inch (1.8 m) telescope replaced a 36-inch (910 mm) teles
