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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.
Negative number B2614c
caption: Zenith Sector - George Graham 1727 (AST0992)
caption: Bradley?s 12�-foot Zenith Sector Telescope by George Graham 1727 at Royal Observatory Greenwich | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Zenith Sector Refracting telescope The Old Royal Observatory Greenwich Observatory Telescopes Treasures of the National Maritime Museum zenith sectors | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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