Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Finish:none View of Temple Stairs

View of Temple Stairs

is held in the elephant's trunk in between the other two men

Campbell (second from the left)

Bill Rogers

Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Finish:none View of Temple StairsPlate 24 figure 2 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 Parsonstown 72 inch