Edmond Halley
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Edmond Halley was an English astronomer, mathematician and physicist. He was the second Astronomer Royal in Britain, succeeding John Flamsteed in 1720.
Portrait of Halley (c. 1690)
Portrait by Richard Phillips, before 1722
Site of Halley's Observatory on the island of Saint Helena
First page to volume I of Miscellanea curiosa published by the Royal Society (1705), in which Halley wrote "An estimate of the quantity of vapours raised out of the sea, derived from experiment"
Astronomer Royal
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Astronomer Royal is a senior post in the Royal Households of the United Kingdom. There are two officers, the senior being the astronomer royal dating from 22 June 1675; the junior is the astronomer royal for Scotland dating from 1834. The Astronomer Royal works to make observations to improve navigation, cartography, instrument design, and applications of geomagnetism. The position was created with the overall goal of discovering a way to determine longitude at sea when out of sight of land.
John Flamsteed, the first astronomer royal, by Thomas Gibson. Royal Society, London.
Image: John Flamsteed 1702
Image: Edmond Halley 072
Image: James Bradley by Thomas Hudson