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RGO Archives/RGO 6 contains:
<-- See earlier
155 Correspondence on Liverpool Observatory
156 Correspondence on Sydney Observatory
157 Correspondence on Northumberland's telescope
158 Papers on Northumberland's telescope
159 Correspondence on instruments
160 Correspondence on instruments
161 Papers on altitude and azimuth instruments
162 Papers on altitude and azimuth instruments
163 Correspondence on new techniques and discoveries
164 Correspondence on new techniques and instruments
165 Correspondence on the Southern Telescope
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Papers of George Airy

Title Correspondence on instruments
Reference RGO 6/160
(former reference: L4/4)
Covering Dates 1842–1849
Extent and Medium 1 box
Content and context

Correspondence and plans for new telescopes, new inventions and improved techniques. There are numerous plans for a new transit circle at Greenwich and arrangements for the zenith sector; a drawing of W. Lassell's polishing machine; J. Locke's paper on his electro-chronograph; O.M. Mitchel's new method of observing transits; the Earl of Rosse's reflecting telescope; a plan for an equatorial telescope; trials of Barlow's Telescope by W.H. Smyth; clock trials; a double image micrometer; and W.H. Miller's water clock for equatorial telescopes, with drawings. The correspondents include R. Sheepshanks, J.F.W. Herschel, W. Whewell, D.F.J. Arago, H.A.E.A. Fayé and the Earl of Rosse. There is also is a table for division of the old quadrant and sliding rules for the error of collimation.

Further information

Indexed

Index Terms
Sheepshanks, Richard (1794-1855) astronomer
Herschel, Sir John Frederick William (1792-1871) Knight, astronomer
Arago, Dominique François Jean (1786-1853) physicist
Fayé, Herve Auguste Etienne Albans (1814-1902) astronomer
Lassell, William (1799-1880) astronomer
Parsons, William (1800-1867) 3rd Earl of Rosse, astronomer
Smyth, William Henry (1788-1865) Admiral, scientist and antiquary
Whewell, William (1794-1866) Master of Trinity College, Cambridge
Mitchel, Ormsby MacKnight (1809-1862) astronomer
Miller, William Hallowes (1801-1880) mineralogist
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