Science
CHRISTIE
(Sir William Henry Mahoney, 1845-1922, Astronomer Royal 1881-1910)
Autograph Letter in the third person to Sir William Treloar,
(1843-1923, Lord Mayor), accepting his invitation to dinner... to meet Old Boys of King's College School, 1 side 8vo, Royal Observatory, Greenwich, 12th April
Item Date: 1907
£25
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Background
Sir William built the 'Physical Observatory' ('South Building') at Greenwich 1891-1899 and equipped it with a new 28 refractor for visual use and a 26 for photographic. The latter was used to map the Sky between the North Celestial Pole and 65 deg. N declination, as part of a great international project.. His own research concerned mainly sunspot activity.
light traces of laying down on blank fourth side
Stock No. 16900
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