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Zenith sector

AST0992
Telescopes

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Collection Telescopes, Astronomical and navigational instruments, Optical equipment, Telescopes Online Gallery, Telescopes at the Royal Observatory Greenwich
Gallery locationROG (Floor plans)
Publication(s)Treasures of the National Maritime Museum
Gloria Clifton and Nigel Rigby
View this book in the library

Object details:

Object ID AST0992
Description This telescope was constructed by George Graham in 1727 for Bradley's personal use in studying the parallax of the star Gamma Draconis. When he was appointed third Astronomer Royal in 1742, Bradley only agreed to bring this instrument to Greenwich after the Government paid him the princely sum of £45 for it. With it he discovered two major phenomena: the aberration of light and the nutation (wobbling) of the Earth's axis. It was used at Greenwich until 1837.
Date made 1727

Artist/Maker Graham, George
Place made London, England
Credit National Maritime Museum, Greenwich, London
Materials tin; iron
Measurements Overall: 3810 x 72 mm
Parts
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