The Sky at Night

Name: The Sky at Night S18E9 - Lord Rosse's Great Telescope
Uploaded: 1974-10-02
Description: A century ago, the most powerful telescope in the world was the great 72-inch reflector at Birr Castle in Eire, with which its builder, the 3rd Earl of Rosse, discovered the spiral galaxies. Patrick Moore visits Birr, and talks to the present Earl and Countess of Rosse about the past and future of the great telescope.