Scope and Contents 'Liber Supputationum' ('A book of calculations'), 113 folios, including work relating to the comet of 1680-1681 (1v-25v); optics, with a diagram marked 'Lectura 2a' (between 32v and 43r); Jupiter's satellites (passim after 46r) and the equation of light, with Römer's table (98v); lunar and solar eclipses (50r-54v, 65r-66r); the weight of metals (55v-56r); Saturn and Jupiter (passim after 85r); notes on 'Dr Goads Weather May 1682' (108rv); and 'Monsieur Picarts table of Refractions' (110rv)....

Scope and Contents

An undated compilation of observations made between January 1679 and December 1680, with solar and planetary tables, 24-30 March 1710, and calculations dating mainly from July 1713, 82 folios. The volume includes lunar observations (1r-27v) and a reference to a visit by Ole Rømer (6r). The writing is mostly in Flamsteed's hand, and the tables in that of Joseph Crosthwait.

Scope and Contents Miscellaneous correspondence with foreign observatories: Correspondence with the Aarhus Observatory, 1936, concerning the location of the Tusculanum Observatory of Ole Rømer.Correspondence with the University of Michigan, Ann Arbor, 1926, concerning the change of name to be inserted in the 'Nautical Almanac'.Correspondence with Apia Observatory, Western Samoa, 1926-1937, concerned mainly with the observation of the total eclipse, 21-22 October 1930. There is also a...

Scope and Contents A commonplace book of lunar calculations, c. 1684 (85r-182v, with a guide at 183v-184r); copy letters, 1679-1700; and notes; 193 folios. The writing is in Flamsteed's hand, with the exception of the letters, which are copied in various hands, but sometimes bear Flamsteed's corrections.The letters are comprised of correspondence with Johann Hevelius, 1679-1685; letters from Edmond Halley, 1679; correspondence with Olaus Römer, 1679; letters to Seth Ward, 1679; letters to Edward...

Scope and Contents Looseleaf miscellaneous observations and equations, principally on star observations and reductions. The papers also include a piece on water clocks; a star catalogue for 1766-1802; extensive comparisons with 'Rømer's Triduum' (the list of his meridian transit observations at Copenhagen Observatory, 20-23 October 1706); the error of geocentric longitude and latitude of the 1807 comet; differences of the Sun's observed right ascension from that in the 'Nautical Almanac', 1807-1808;...

Scope and Contents Examination of John Flamsteed and James Bradley's observations, primarily by John Howe.1. Distances from the Pole Star to the Pole based on observations by Tycho Brahe in 1583 and by Flamsteed in 1690, compiled by Howe, 31 May 1708.2. The precession of the equinox inferred from Flamsteed's 1690 observations, compiled by Howe, 13 December 1770.3. Apparent right ascension of the star Alpha Aquilae, 1753-1756, and other stars.4. A star catalogue showing proper...

Scope and Contents

Notes on how to observe the satellites and use the tables are included, together with copied pieces on Ole Rømer, 'Progressive Motion of Light in the Eclipses of Jupiter's Satellites', from 'Philosophical Transactions', Vol. 1, p. 409; Edmond Halley's hypothesis of Jupiter's satellites and his counter-arguments, from 'Philosophical Transactions', No. 214, November and December 1694; and James Bradley, 'Observations of Jupiter's Satellites'.