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Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 70 x 70cm December 1971

SKU 51688934846
4.5
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 70 x 70cm December 1971
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 70 x 70cm December 1971
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 70 x 70cm December 1971
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 70 x 70cm December 1971
Description

December 1971

Montalembert was found guilty

Buckingham House

with the monocle

View of Westminster and the City of London from Islington

Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 70 x 70cm December 1971Plate 24 figure 1 from the paper 'On the construction of specula of six feet aperture; and a selection from the observations of nebulae made with them', by William Parsons, 3rd Earl of Rosse, Philosophical Transactions of the Royal Society, volume 151 (1861) pp. 681 746. A view of the speculum on supporting levers supported on a cast iron rail carriage. The carriage is shown on a turntable situated to the north side of the 72 inch reflecting

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