25.1 MB (5.0 MB compressed)
3381 x 2590 pixels
28.7 x 21.8 cm ⏐ 11.3 x 8.6 in (300dpi)
UNIVERSAL HISTORY ARCHIVE / UIG / SCIENCE PHOTO LIBRARY UNIVERSAL HISTORY ARCHIVE / UIG / SCIENCE PHOTO LIBRARY
Lord Rosse's great 72-inch (1.828m) diameter reflecting telescope of 1845, called the Leviathan of Parsonstown. Mounted between two brick walls, it could move only in a north-south direction. The Earth's rotation provided movement in an east-west direction. From his paper 'On the Construction of Specula of Six-feet Aperture' in Philosophical Transactions of the Royal Society (London, 1849). William Parsons, 3rd Earl of Rosse (1800-1867).
Model release not required. Property release not required.