Cosmic Anisotropy Telescope

Cosmic Anisotropy Telescope

Location(s)	United Kingdom
Coordinates	52°09′58″N0°02′02″E / 52.166°N 0.034°E / 52.166; 0.034
Location of Cosmic Anisotropy Telescope
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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]

References

1. "CAT - Introduction". MRAO . NASA . Retrieved 1 June 2025.
2. "First detailed picture of the early universe". MRAO (Press release). 1996. Retrieved 1 June 2025.
3. Scott, P. F.; et al. (April 1996). "Measurements of Structure in the Cosmic Background Radiation with the Cambridge Cosmic Anisotropy Telescope". The Astrophysical Journal . 461 (1): L1 –L4. doi:10.1086/310000.
4. "The Cosmic Anisotropy Telescope". MRAO . NASA . Retrieved 1 June 2025.

External links

• Cosmic Anisotropy Telescope (CAT) online
• The first detection of small-scale structure in the cosmic microwave background
• Press release from 1995 describing first measurements of small-scale structure in the cosmic microwave background
• The CAT enclosure on Google Maps