The Cerro Chajnantor Atacama Telescope (CCAT) is a proposed 25 metres (82 ft) diameter telescope that is intended to reveal the cosmic origins of stars, planets, and galaxies with its submillimeter cameras and spectrometers enabled by superconducting detector arrays.

[6] The planned site is at an altitude of 5,612 metres (18,412 ft), on Cerro Chajnantor mountain/summit of the volcanic Purico Complex, in the Atacama Desert of northern Chile.

These measurements will enable astronomers to learn more about the Milky Way, local galaxies, Epoch of Reionization, and Cosmology.

[13] In January 2014 the Chilean government granted the use of land on Cerro Chajnantor to the CCAT consortium for the telescope and the road to the mountain summit.

[14] Also in January 2014, the Atacama Astronomy Park was inaugurated by the Chilean government, to coordinate activities between the current and upcoming observatories in the Chajnantor region.