Allen Telescope Array

The Allen Telescope Array (ATA) was developed by the SETI Institute and the Radio Astronomy Laboratory (RAL) at the University of California, Berkeley to construct a radio interferometer that is dedicated to radio astronomy observations. At the same time, it is also used for the search for extraterrestrial intelligence.^[1][2]

Allen Telescope Array

The Allen Telescope Array (ATA-42), October 11, 2007.
Alternative names	ATA
Named after	Paul Allen
Part of	Hat Creek Radio Observatory
Location(s)	California, Pacific States Region
Coordinates	40°49′04″N 121°28′24″W
Organization	Radio Astronomy Laboratory SETI Institute
Wavelength	60, 2.7 cm (500, 11,100 MHz)
Telescope style	Gregorian telescope radio interferometer
Number of telescopes	42
Diameter	6.1 m (20 ft 0 in)
Secondary diameter	2.4 m (7 ft 10 in)
Collecting area	1,227 m2 (13,210 sq ft)
Website	www.seti.org/ata
Location of Allen Telescope Array
Related media on Wikimedia Commons

The ATA is at the Hat Creek Radio Observatory, 290 miles (470 km) northeast of San Francisco, California. The goal is to have 350 antennas.^[3] To start, 42 antennas (ATA-42) were put to work on 11 October 2007.^[4][5] However, a lack of money stopped operations in April 2011.^[6][7] In August 2011, ATA got short-term funding.^[8] In 2012 UC Berkeley quit the project.

It is named after Paul Allen, the co-founder of Microsoft. Its old name was the One Hectare Telescope (1hT).