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. In 1995, it was the first instrument to measure small-scale structure in the cosmic microwave background. When the more sensitive Very Small Array came online, the CAT telescope was decommissioned in a ceremonial bonfire.

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Cosmic microwave background radiation (CMB)

Discovery of CMB radiation List of CMB experiments Timeline of CMB astronomy

Effects	Cosmic variance Diffusion damping Sachs–Wolfe effect Sunyaev–Zel'dovich effect Recombination Thomson scattering	Full-sky temperature map taken by NASA's Wilkinson Microwave Anisotropy Probe (WMAP)

Space-based experiments	COBE CMBPol Planck RELIKT-1 SPOrt WMAP

Balloon experiments	Archeops BOOMERanG EBEX MAXIMA QMAP Spider TopHat

Ground-based experiments	ABS ACBAR ACT AMI AMiBA APEX-SZ BICEP BICEP2 BIMA CAPMAP CAT CBI Clover COSMOSOMAS DASI FOCUS GUBBINS Keck Array MAT OCRA OVRO QUaD QUIET QUIJOTE RGWBT Saskatoon SPT SZA Tenerife VSA