Cosmic Anisotropy Telescope

The Cosmic Anisotropy Telescope (CAT) was a three-element interferometer for cosmic microwave background radiation (CMB/R) observations at 13 to 17 GHz, based at the Mullard Radio Astronomy Observatory.^[1] In 1995, it was the first instrument to measure small-scale structure in the cosmic microwave background.^[2][3] When the more sensitive Very Small Array came online in 2000, the CAT was decommissioned and partly dismantled.^[4]

Cosmic Anisotropy Telescope

Location(s)	United Kingdom
Coordinates	52°09′58″N 0°02′02″E
Location of Cosmic Anisotropy Telescope
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