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With Mr Yorke's opinion dated 10 Nov. 1764.

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Two first day covers each bearing four stamps issued for the 1984 ‘Centenary of the Greenwich Meridian’. The stamps show: a view of the Earth from the Apollo 11 (16p), a navigational chart of the British Channel (20.5p), the Royal Greenwich Observatory (28p), and Sir George Airy’s Transit Circle (31p). The first set is on an envelope with a printed image of Flamsteed House; the second is on an envelope with a printed image of the Meridian.

Scope and Contents The observation ledgers collected in this class represent observations made at the Royal Observatory, Greenwich, from 1911 to 1936. The Cookson Floating Zenith Telescope was manufactured to the design of Bryan Cookson (1874-1909) at the celebrated makers the Cambridge Scientific Instrument Company and T. Cooke & Sons of York where the object glass and some of the iron-work was produced (the records of both these companies are retained in the collections of the Department of...

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Copies of letters concerning printed copies of astronomical observations made by John Flamsteed (30 Nov. 1715) and Nevil Maskelyne (1774).

Scope and Contents Copies of letters written by Lady Clive to her brother Nevil Maskelyne (three letters dated 1775) and to Edmund Maskelyne (one letter dated 1766); originals are in the volume catalogued at RGO 218/9/1. Also, copies of two letters from Nevil Maskelyne to his brother Edmund (29 Dec. 1763, written from Barbados describing his observatory and experiences) and to Anthony Shepherd (written 15 Oct. 1764 on his return from Barbados, reporting his observations and thanking him for notification of the...

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Copies of outgoing correspondence from Astronomer Royal, John Pond, and his assistant, Thomas Taylor, at the Royal Observatory. Some of the letters are addressed to chronometer makers. Note that correspondence to more than one person often appears on the same page.

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Authorising the replacement or repair of defective instruments at the Royal Observatory, Greenwich.

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Copies of outgoing correspondence from Astronomer Royal, John Pond, and his assistant, Thomas Taylor, at the Royal Observatory. Some of the letters are addressed to chronometer makers. Note that correspondence to more than one person often appears on the same page.

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Copies of outgoing correspondence from Astronomer Royal, John Pond, and his assistant, Thomas Taylor, at the Royal Observatory. Some of the letters are addressed to chronometer makers. Note that correspondence to more than one person often appears on the same page.

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Copies of outgoing correspondence from Astronomer Royal, John Pond, and his assistant, Thomas Taylor, at the Royal Observatory. Some of the letters are addressed to chronometer makers. Note that correspondence to more than one person often appears on the same page.

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Copies of outgoing correspondence from Astronomer Royal, John Pond, and his assistant, Thomas Taylor, at the Royal Observatory. Some of the letters are addressed to chronometer makers. Note that correspondence to more than one person often appears on the same page.

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The series also includes two accounts of the rates of watches by Josiah Emory.

Scope and Contents From the Series: The first part of collection is comprised of papers concerning the internal affairs of the Board of Longitude, including the granting of awards, accounts, minutes, committee papers, petitions and memorials, the loan of instruments, publications and the payment of staff. These are followed by a wide range of papers relating to the Board's work, concerning clocks, chronometers and other instruments; longitude and latitude; magnetic variation; schemes and inventions; tables; pendulum...

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The series also includes two accounts of the rates of watches by Josiah Emory.

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Set of documents relating to the Royal Observatory, wrapped in paper marked 'King's warrant of appointment to the Royal Observatory, appointment of visitors and sundry other papers relative to the Royal Observatory'.

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Royal warrant of appointment, detailing Maskelyne's duties and fixing his salary (£100 plus £26 for an assistant or servant). Signed by the Earl of Sandwich and George III.

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Warrant increasing the salary of the assistant to Nevil Maskelyne, Astronomer Royal at the Royal Observatory Greenwich to £100. Signed by George III.

Scope and Contents From the Series: The collection contains a complete set of astronomical observation ledgers, with clock error notes, computation ledgers, star catalogues, weather records and correspondence. There are observations of comets, including measurements taken of Encke's Comet, 1828, and Halley's Comet, 1835, and observations of rockets, made with Sir James South in 1831. The papers include Pond's measurements for his work on the proper motions of stars, stellar parallax and other subjects, as well as substantial...

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Signed by William Eden.

Scope and Contents Outgoing correspondence regarding many astronomical and nautical subjects, including accounts with printers, the production of the 'Nautical Almanac', expeditions to Australia, a reward for a method of making glass of a sufficient quality for instruments, the trial of various timepieces and their employment on board Royal Navy vessels, replies to projectors proposing various methods of finding longitude at sea, and instructions for astronomers (including William Gooch on board the Daedalus...

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Sent by Francis Beaufort to Mr Taylor.

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Sent from John Barrow to John Pond.

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Sent from John Croker to John Pond; with a note attached marked 'Liability for chronometers'.

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Sent from John Barrow to John Pond.

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Sent from John Croker to John Pond.