Lord Rosse's telescope at Birr Castle, Ireland Size:L: 90 x 60cm on the Whitsunday holiday

on the Whitsunday holiday

A chauffeur opening the door for his passenger

his hands resting on a globe

Bowling Green Lane

Lord Rosse's telescope at Birr Castle, Ireland Size:L: 90 x 60cm on the Whitsunday holidayStereoscopic photograph used to produce Plate 24 figure 9 for 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. Study of the crane carrying the eastern counterpoise of the great telescope. The image shows the guide wheel, pulley system and other features;