Ríos, José de Mendoza y, c1762 - 1816 (naval officer and astronomer)
Found in 13 Collections and/or Records:
Papers regarding payments for work done on behalf of the Board, including some miscellaneous receipts.
An award of £1200 was made to José Mendoza y Ríos for his work on nautical astronomy.
Includes an unrelated note relating to a payment of £1,200 to Mendoza y Ríos [RGO 14/38: 325].
Correspondence regarding various astronomical and nautical tables.
With an index of names.
Letter from José de Mendoza y Ríos concerning rules for computing latitude by two altitudes of the sun, 1796-12-02
Correspondence regarding methods for establishing latitude.
A diary of work performed on the 'Nautical Almanac' and arrangements for its compilation and publication.
A set of loose pages dealing with problems in ascertaining latitude and longitude at sea by observation of the stars, with descriptions, computations and formulae referred to apparent time. There are also sections on finding the Moon's longitude from the nautical ephemeris [RGO 4/196: 1r], the motion of the Sun's image in a Hadley quadrant [RGO 4/196: 2r], and the testing of other people's hypotheses.
It is not known if the papers are foliated in their original order.
Concerning the payment of £1,200 to [José de] Mendoza y Ríos for his successful labours and many useful improvements made in nautical astronomy.
Reports from Nevil Maskelyne on the merits of petitions submitted to the Board of Longitude. Most of the petitions are concerned with various methods of discovering longitude at sea. Includes a report titled 'Remarks on Mr Earnshaw's Petition', and a list of Charles Mason's papers presented to the Board of Longitude.