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Armagh Observatory
Armagh Observatory records, 1796-1907.
15 Transit Circle Observation Books, 1796-1883; 11 Anemometer Record Books, 1852-1907; 4 Mural Circle Observation Books, 1834-1858; 2 Books of corrections for [mural] circle observations, 1841-1864; 5 'wire'record books, 1832-1883; 6 books of constants, ca. 1850- ca. 1883; and 4 miscellaneous observation books, ca. 1882-1883.
Anemometer -- Measurement -- Northern Ireland -- 19th century.
Astronomy -- Observations -- Northern Ireland -- 19th century.
Astronomical constants.
Astronomical observatories -- Northern Ireland -- 19th century.
Astronomy -- Mathematics -- 19th century.
Transit-circle -- Observations.
AIP-ICOS
Public Record Office of Northern Ireland. 66 Balmoral Avenue, Belfast BT9 6NY, Ireland
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