Maclear, Thomas, Sir, 1794 - 1879 (Knight, astronomer)
Found in 102 Collections and/or Records:
Letters from the Colonial Office, 1860 - 1872
Letters on the Magnetic Observatory fire, 1851 - 1856
Letters on the Port Elizabeth Time Ball, 1866 - 1869
Letters on the telegraph, 1860 - 1869
Letters to Thomas Maclear concerned mainly with the telegraph and related apparatus, including batteries. Parts of some of the letters are damaged, rendering the text unreadable.
Letters to Francis Baily, 1828 - 1843
Letters to Thomas Maclear, 1840 - 1863
Letters to Thomas Maclear from W.S. Jacob and C.P. Smyth, mainly of a personal nature. The letters include a set sent by Smyth to Maclear while he was absent from the Cape Observatory performing observations for the Arc of the Meridian and Cape Survey. These include carbon copies of Maclear's instructions for further work to be done. There are also printed publications of the 1849 meeting of the 'Entomological Society of London' and on the 'Akbar Frigate'.
Measurements on the meridian arc, 1840 - 1841
Measurements by Thomas Maclear of the angle of triangulation of a chain of points along the arc of a meridian, with an index at the beginning containing the names of the stations at which the observations were made.
Measurements on the meridian arc, 1842 - 1843
Measurements by Thomas Maclear of the angle of triangulation of a chain of points along the arc of a meridian, with an index at the beginning containing the names of the stations at which the observations were made.
Measurements on the meridian arc, 1843 - 1844
Measurements by Thomas Maclear of the angle of triangulation of a chain of points along the arc of a meridian, with an index at the beginning containing the names of the stations at which the observations were made.
Measurements on the meridian arc, 1844 - 1845
Measurements by Thomas Maclear of the angle of triangulation of a chain of points along the arc of a meridian, with an index at the beginning containing the names of the stations at which the observations were made.
Measurements on the meridian arc, 1844 - 1846
Measurements by Thomas Maclear of the angle of triangulation of a chain of points along the arc of a meridian, with an index at the beginning containing the names of the stations at which the observations were made.
Measurements on the meridian arc, 1846 - 1847
Measurements by Thomas Maclear of the angle of triangulation of a chain of points along the arc of a meridian, with an index at the beginning containing the names of the stations at which the observations were made.
Meteorological register, 1851-07-01 - 1851-10-14
The private meteorological register of Thomas Maclear.
Microfilm of RGO 15/27 and 30
An undated microfilm made by the Public Record Office of correspondence of the Royal Observatory, Cape of Good Hope: RGO 15/27, correspondence of Fearon Fallows and Thomas Henderson, 1820-1833, and RGO 15/30, correspondence of Henderson, G.B. Airy and Thomas Maclear, 1832-1842.
Miscellaneous correspondence, 1846 - 1897
Miscellaneous correspondence, 1857 - 1859
Miscellaneous correspondence, 1837 - 1850
Letters to Thomas Maclear from Timms, Gibbs, F. Baily, Taylor, G. Dolland, the Academy of Science in Paris and G.B. Airy regarding Halley's Comet, the printing of observations, instrument problems and their solution and other subjects.
Miscellaneous correspondence, 1841 - 1860
Miscellaneous correspondence, 1870 - 1875
Miscellaneous letters, 1857 - 1859
Letters to Thomas Maclear from various individuals regarding the trigonometric survey and the issue of chronometers, with letters of introduction to Maclear. There are also letters concerning the topography of the Cape Colony, 7 March 1857; Cape Point Lighthouse, 26 July 1857; a report on an earthquake, 20 October 1857; the memorial to Thomas Holden Barker, 4 July 1858; and a report on Dr Livingstone, 10 November 1858.
Miscellaneous letters, 1860 - 1865
'Nautical Almanac' correspondence, 1859 - 1868
Correspondence with J.R. Hind concerning the 'Nautical Almanac', regarding the adoption of Le Verrier's tables, ephemerides of small planets, solar eclipses of 1866 and 1868 (with a map for the latter) and errors in the work. There are various requests for data on the Moon's culminations and places, including one on behalf of D. Livingstone. Other correspondents include E.J. Stone, U.J.J. Le Verrier, A. Laussedat, J.J. von Littrow, T. Maclear and A.C. Campbell.
Observations and computations, 1848 - 1849
Observations and miscellaneous computations by Thomas Maclear comprised mostly of theodolite readings for the Arc of Meridian.
Observations and notes, 1834 - 1836
Observations and miscellaneous notes by Thomas Maclear, including observations of Halley's Comet.
Observations of planets, satellites and comets, 1833-12-21 - 1838-11-29
Additional filters:
- Subject
- Astronomical observatories 3
- Cape of Good Hope 3
- Clocks 3
- Liverpool 3
- Pulkovo 3
- Astronomical telescopes 2
- Chennai 2
- Edinburgh 2
- Glasgow 2
- Ipswich 2
- Longitude 2
- Meteorites 2
- Metrology 2
- Adan 1
- Atlantic Ocean 1
- Australia 1
- Aylesbury 1
- Birmingham 1
- Bristol 1
- Cardiff 1
- Compasses 1
- Devonport 1
- Electricity 1
- Geodesy 1
- Georgetown 1
- Italy 1
- London 1
- Magnetism 1
- Meteorology 1
- Newcastle upon Tyne 1
- Nice 1
- Oxford 1
- Paris 1
- Port Elizabeth 1
- Ships 1
- Sydney 1
- Telegraphy 1
- Time 1
- Weights and measures 1
- Wellington 1
- Worcester 1 ∧ less