Isaac Newton’s first reflector; The Rosse ‘Leviathan’ at Birr Castle; The Mount Wilson 100-inch; The Palomar 200-inch; The Hubble Space Telescope. read more
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Isaac Newton’s first reflector; The Rosse ‘Leviathan’ at Birr Castle; The Mount Wilson 100-inch; The Palomar 200-inch; The Hubble Space Telescope. read more