William Herschel

Sir Wilhelm Friedrich Herschel (Hanover, November 15 1738 – August 25 1822 Slough, then in Buckinghamshire now in Berkshire) was a German-born British astronomer and composer who became famous for discovering the planet Uranus, and made many other astronomical discoveries.

Biography

Herschel was born as Friedrich Wilhelm Herschel in Hanover, Germany, one of ten children (of which four died very young). In 1755 the Hanoverian Guards regiment in whose band William and his brother Jacob were engaged was ordered to England. At the time, the crowns of England and Hanover were united under George II. He learned English quickly and, at age nineteen, he changed his name to Frederick William Herschel.

Related Topics:
Hanover - Germany - 1755 - England - Hanover - George II - Name

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He became a successful music teacher and bandleader, played the organ and the oboe, and composed numerous musical works, most of which are largely forgotten today. He became Director of Public Concerts in Bath. His sister Caroline also came to England and lived with him.

Related Topics:
Bath - Caroline

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His interest in astronomy grew stronger after 1773, and he built some telescopes and made the acquaintance of Nevil Maskelyne. He observed the Moon, measuring the heights of lunar mountains, and also worked on a catalog of double stars.

Related Topics:
1773 - Nevil Maskelyne - Moon - Double star

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The turning point in his life was March 13 1781, while residing at 19 New King Street, Bath, when he discovered Uranus. This made him famous and enabled him to turn to astronomy full-time. Naming the new planet Georgium Sidus in honour of King George III also brought him favour (the name didn't stick). That same year, Herschel was awarded the Copley Medal and was elected a Fellow of the Royal Society. In 1782, he was appointed "The King?s Astronomer" and he and his sister subsequently moved to Datchet (then in Buckinghamshire but now in Berkshire) on August 1 1782. He also continued his work as a telescope maker, selling a number of them to other astronomers.

Related Topics:
March 13 - 1781 - Bath - Uranus - King George III - Copley Medal - Royal Society - 1782 - Datchet - Buckinghamshire - Berkshire - August 1

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In 1783 he gave Caroline a telescope and she began to make astronomical discoveries in her own right, particularly comets. Caroline also served as his full-time assistant, taking notes while he observed at the telescope.

Related Topics:
1783 - Comet

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In June 1785, due to damp conditions, he and Caroline moved to Clay Hall in Old Windsor. Clay Hall (or Clayhall Farm) had been owned by Samuel Foote, father of Topham Foote whose bust by Peter Scheemakers is in Windsor Parish Church. Topham's mother sold the farm to her brother Richard Topham who willed it to Sidney Bleuclerk. On April 3 1786, William Herschel moved his family to a new residence on Windsor Road in Slough. He lived the rest of his life in this residence, which came to be known as Observatory House. It is no longer standing, having been demolished in 1963 to make way for a high-rise office building.

Related Topics:
June - 1785 - Old Windsor - April 3 - 1786 - Slough - 1963

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On May 7 1788, he married the widow Mary Pitt (née Baldwin) at St Laurence's Church, Upton, near Slough. His sister Caroline then moved to separate lodgings, but continued to work as his assistant.

Related Topics:
May 7 - 1788 - Mary Pitt - St Laurence's Church, Upton

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During the course of his career, he constructed more than four hundred telescopes. The largest and most famous of these was a reflecting telescope with a 40 ft (12 m) focal length and an aperture 49½ inches (126 cm) in diameter. On August 28 1789, his first night of observation using this instrument, he discovered a new moon of Saturn. A second moon followed within the first month of observation. The 40 ft telescope proved very cumbersome, however, and most of his observations were done with a smaller telescope of 20 ft (6.1 m) focal length.

Related Topics:
Reflecting telescope - Focal length - August 28 - 1789 - Saturn

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William and Mary had one child, John, born at Observatory House on March 7 1792. In 1816, William was knighted "Sir William Herschel" by the Prince Regent. He helped to found the Astronomical Society of London in 1820, which in 1831 received a royal charter and became the Royal Astronomical Society.

Related Topics:
John - March 7 - 1792 - 1816 - Prince Regent - 1831 - Royal Astronomical Society

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On August 25 1822, Herschel died at Observatory House, Slough, and is buried at nearby St Laurence's Church, Upton.

Related Topics:
August 25 - 1822

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His son John Herschel also became a famous astronomer. One of William's brothers, Alexander, also moved permanently to England, near Caroline and William though not in the same household, but was not a scientist.

Related Topics:
Son - John Herschel

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His house in Bath, where he made many telescopes and first observed Uranus, is now home to the William Herschel Museum.

Related Topics:
Bath - Telescope - Uranus - William Herschel Museum

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