Astrophysics (index)about

Cosmic Anisotropy Telescope

(1990s interferometer to measure CMB variations)

The Cosmic Anisotropy Telescope (CAT) was a 1990s interferometer to measure the cosmic microwave background. It was a 3-element interferometer at Mullard Radio Astronomy Observatory near Cambridge, England. It was in operation from 1995 until 2000 when the Very Small Array (VSA) made it obsolete.