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The Sky at Night•Season 18•Episode 9

Lord Rosse's Great Telescope

Oct 2, 1974

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

Previous episodeE8 · Choosing a Telescope Next episodeE10 · The Changing Force of Gravity

Seasons70

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Season 18 Episodes12

Positional Astronomy

Saturn - The Ringed Planet

The Milky Way

Life in the Universe

The Daylight Star

The Heart of the Scorpion

Shooting Stars

Choosing a Telescope

Lord Rosse's Great Telescope

The Changing Force of Gravity

Eros - Wanderer in Space

The Year of the Planets

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Episode Summary

"Lord Rosse's Great Telescope" is episode 9 of The Sky at Night season 18. It aired on October 2, 1974.

Next: E10 · The Changing Force of Gravity Best of Season 18