Found in 43 Collections and/or Records:
Admiralty papers sent to Pond concerning the fitting out of H M Ships with chronometers.
Observations from Captain Cook's last voyage.
Captain Cook's journal of his voyage to the South Seas, including observations of variation of the compass and observations for chronometer rates.
Correspondence on observations.
A Royal Observatory letter book containing copies of outgoing correspondence concerning chronometers. Some of the letters are addressed to chronometer makers. Inverted at the back is a record of the letters received.
Correspondence regarding methods of establishing longitude by Jupiter's satellites, the planets and fixed stars, 1803 - 1828
Correspondence regarding methods of establishing longitude by lunar methods other than lunar distances, 1779 - 1825
Correspondence regarding methods of establishing longitude by lunar methods other than lunar distances, 1782 - 1828
Seventeen letters from Captain Matthew Flinders, his brother Lieutenant Samuel Ward Flinders, the astronomer John Crosley, Captain Thomas Hurd and the Astronomer Royal, John Pond. Also included are copies of relevant minutes of the Board of Longitude, a proposal by Captain Flinders that the whole of the calculations for the voyage should be calculated, and a petition by Samuel Ward Flinders for remuneration for work he had done on the observations.
Correspondence between the Admiralty Office and the Royal Observatory, Greenwich, requesting the loan of chronometers for H M Ships. The principal recipient is John Pond; the principal correspondent is John Barrow. Other correspondents include John Croker, Richard S. Dundas, G. Smith, John Franklin and Sir William Edward Parry.
A diary of work performed on the 'Nautical Almanac' and arrangements for its compilation and publication.
Miscellaneous draft letters.
'To clear the distance of the Moon from a star from the effects of refraction and parallax', February 1766. The envelope includes copies of reports made to the Board of Longitude by John Howe, undated, and M. Raper of Thorley Hall, 9 July 1765, on the method of Israel Lyons and George Witchell for correcting observed distances. There are also a number of tables on the Sun's parallax.
A collection of papers by Evan John Hobden who worked at the Chronometer Department, Herstmonceux and had a strong interest in marine chronometers. The records include John's handwritten notes on marine chronometer sales; his records of the sale and advertising of chronometers between 1972 and 1987; annotated Sotheby's catalogues for 1982 chronometer sales; and pamphlets on the RGO Chronometer Department and the Salisbury Medieval Clock.
Presentation pack containing four stamps of John Harrison’s Marine Timekeeper No.4 (24p, 28p, 33p and 39p) and a Harrison information sheet.
Also, first day cover with printed images of Harrison and a ship at sea; the four 'Marine Timekeepers’ stamps are affixed and postmarked by the British Philatelic Bureau, Edinburgh.
The letters are primarily from Nevil Maskelyne but include three sent to Andrews by Margaret Maskelyne, following the death of her father.