The Leviathan of Parsonstown, Birr Castle. The 6ft telescope was built in 1845 by William Parsons, 3rd Earl of Rosse, and remained the largest telescope in the world for 70 years
The Leviathan of Parsonstown, Birr Castle. The 6ft telescope was built in 1845 by William Parsons, 3rd Earl of Rosse, and remained the largest telescope in the world for 70 years
