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Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm held on 27 April 1749

SKU 40523910256
4.1
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm held on 27 April 1749
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm held on 27 April 1749
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm held on 27 April 1749
Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm held on 27 April 1749
Description

held on 27 April 1749

The Crown Inn

He and Lady Hamilton are making metaphorical remarks on the subject

'Picus varius minor

Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm held on 27 April 1749Plate 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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