William Parsons put Offaly at the centre of global astronomy in 1845. He built the largest telescope in the world until the construction of the 100-inch (2.5 m) Hooker Telescope in California in 1917.
William Parsons put Offaly at the centre of global astronomy in 1845. He built the largest telescope in the world until the construction of the 100-inch (2.5 m) Hooker Telescope in California in 1917.