Sadler, Donald Harry, 1908 - 1987 (astronomer)
Found in 85 Collections and/or Records:
Notes, tables and other papers of D.H. Sadler and J.G. Porter regarding the calculation of apparent places of stars, including some printed material.
'Secular perturbations of Mercury by Venus' and the 'Integration of Complete Orbits' by D.H. Sadler, undated.
Correspondence and other papers regarding the visits of D.H. Sadler to Ottawa and other places.
Typescripts, mainly by D.H. Sadler, relating to discussions with G.M. Clemence regarding astronomical constants and other subjects.
Correspondence and other papers regarding the article 'A Modern View of Lunar Distances' by D.H. Sadler.
A folder regarding the basis of solar ephemeris, especially the comparison between 'Astronomical Ephemeris'/'Nautical Almanac' values from Newcomb's tables and A.P.A.E., Vol. XIV. There are also various other papers relating to 'Sun from Newcomb' work carried out by D.H. Sadler, E. Smith and J.G. Porter, dating mainly from the 1950s.
Papers regarding Nautical Almanac Office promotions and personal staff matters, mainly left by D.H. Sadler.
Papers concerning the change in reckoning of the astronomical day, including 'The Report of the Committee on the 24 Hour Method of Expressing Time', 1919; correspondence with the Hydrographer concerning documents; correspondence between D.H. Sadler and the Royal Astronomical Society; and handwritten notes by Sadler on the history and timetable of the proposed change.
Copies of D.H. Sadler's paper 'Amendment to the Lunar Ephemeris', published in 'Monthly Notices of the Royal Astronomical Society', Vol. 101, 1954, with related papers. The paper concerns the recommendation of the Paris Conference on the Fundamental Constants of Astronomy (1950) to amend the lunar ephemeris to bring it into accordance with the solar ephemeris.
Papers regarding the exhibition 'Man Is Not Lost' at the National Maritime Museum for the bicentenary of the 'Nautical Almanac'. The papers include notes on the preparations, a schedule of featured exhibits, a description of the exhibition, and specifications for the exhibition, with diagrams. There is also a letter from Basil Greenhill, Nautical Maritime Museum, to D.H. Sadler, Nautical Almanac Office, regarding keeping the exhibition at the Museum for two more years.
Miscellaneous papers regarding the activities of the Nautical Almanac Office, including the N.A.O. Library book plate; notes from D.H. Sadler to the Astronomer Royal on astronomical ephemeris, 12 and 17 March 1969; and material on the bicentenary of the first 'Nautical Almanac', 1958-1961.
'Miscellaneous Notes on N.A.O. Records and Files' by D.H. Sadler, 25 January 1971, 16 pages, and 'Extracts, Relating to the Nautical Almanac from the Manuscript Book "Auto-Biographical Notes" by Edwin Dunkin...now in the Library of the Royal Astronomical Society', by Sadler, 2 June 1971, 6 pages. Attached to the inside back cover of the binder is a photocopy of an article by Dunkin on the 'Nautical Almanac', 4 pages.
Photocopies of two papers by D.H. Sadler: 'Miscellaneous Notes on N.A.O. Records and Files', 25 January 1971, 16 pages, and 'Extracts, Relating to the Nautical Almanac from the Manuscript Book "Auto-Biographical Notes" by Edwin Dunkin...now in the Library of the Royal Astronomical Society', 2 June 1971, 6 pages. There is also the typescript of 'The Expanding Role of H.M. Nautical Almanac Office 1818-1975' by G.A. Wilkins, 1975, 7 pages.
The UK Archival Thesaurus has been integrated with our catalogue, thanks to Kings College London and the AIM25 project for their support with this.