The Sky at Night

Season 32 Episode 3: Yerkes Observatory

Yerkes Observatory, at Williams Bay near Chicago, is a most unusual place. Its main telescope is not a reflector, but a refractor - the world's largest Old-fashioned though it may look, Yerkes is in the forefront of scientific research, as Patrick Moore explains when he goes there to talk to the director, Dr Al Harper, and members of the observatory's staff.

Genre:

Documentary, News

Seasons:

70

Episodes:

847

Cast:

Quality:

HD

Duration:

30 min

First Air:

1957

Rating:

8.3