Scope and Contents

Copies of astronomical papers by G.C. Eimmart and Christoph Arnold of 1690-1693, 15 folios. There are Latin notes and diagrams concerning a solar eclipse observed by Eimmart at Nuremberg, 23 June 1693 (1r-12r); a description of a transit of Mercury and other work by Arnold, 1690-1691; and a translation of a letter by Arnold, 1690. The copies are undated, but are roughly contemporary. The handwriting has not been identified.

Scope and Contents Minutes of Board of Longitude meetings regarding, among other matters, discussions on John Harrison's first marine chronometer (H1); the purchase of new instruments for work on the longitude and latitude of the coasts of Britain; improvements to the reflecting telescope; Tobias Mayer's lunar motion tables; the trial of John Harrison's chronometers; errors in the tables of the satellites; Schutz's machine for finding longitude; Chistopher Irwin's marine chair; the use of lunar observations...

Scope and Contents Minutes of Board of Longitude meetings regarding, among other matters, the rates of various chronometers; Charles Hutton's tables of products, powers and roots of natural numbers; the voyages of HMS 'Resolution' and HMS 'Discovery' and the examination of their log books; John Arnold's improvements to his watches; a suitable site for the Board of Longitude's instruments after the burning of the cupola of the Greenwich Hospital where they had been kept; improvements to reflecting telescopes;...

Scope and Contents Minutes of Board of Longitude meetings regarding, among other matters, tables devised by José Mendoza de Ríos; correspondence with John Crosley (the astronomer with the expedition to New South Wales); a claim for a reward for Charles Mason's work on lunar tables; a report on the Arnold and Earnshaw chronometers going on the voyage of Captain Matthew Flinders; grants and awards to chronometer-makers; the observations of Nathaniel Bliss when he was Astronomer Royal; models of watch escapements...

Scope and Contents From the Item:

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.

Scope and Contents Flamsteed's drafts of letters, and letters received by others, including Flamsteed to Glen about earthquakes [1692] (95rv); an incomplete reply [to Wren?] to criticisms of Flamsteed's piece on stellar parallax [c. 1700]; Flamsteed [to Pepys?] on the training of naval officers [c. 1697] (99rv); a complaint about pews in Greenwich church [c. 1718] (100r); John Vermuyden to Steven Flamsteed, 1673 (101r); anon. to Immanuel Halton, 1676 (103r); William Balle to Sir Jonas Moore, 1677 (104rv);...

Scope and Contents

A microfilm made by Cambridge University Library of RGO 1/73, astronomical papers by G.C. Eimmart and Christoph Arnold, 1690-1693.