South America
| Name | Location | Remarks |
|---|---|---|
| Atacama Cosmology Telescope (ACT) | Llano de Chajnantor Observatory, Atacama Desert, Chile | 6 m telescope located on Cerro Toco. |
| Atacama Large Millimeter Array (ALMA) | Llano de Chajnantor Observatory, Atacama Desert, Chile | 54 dishes with 12-m diameter and 12 dishes with 7-m diameter, sensitive to wavelengths between radio and infrared (submillimetre astronomy). |
| Atacama Pathfinder Experiment (APEX) | Llano de Chajnantor Observatory, Atacama Desert, Chile | 12 m telescope located at the Chajnantor plateau. |
| Atacama Submillimeter Telescope Experiment (ASTE) | Llano de Chajnantor Observatory, Atacama Desert, Chile | 10 m telescope located at Pampa La Bola. |
| Cosmic Background Imager (CBI) | Llano de Chajnantor Observatory, Atacama Desert, Chile | 13 dishes with 1m diameter located at the Chajnantor plateau. Decommissioned in 2008. |
| NANTEN2 Observatory (NANTEN2) | Llano de Chajnantor Observatory, Atacama Desert, Chile | 4m telescope located at Pampa La Bola. |
| Q/U Imaging Experiment (QUIET) | Llano de Chajnantor Observatory, Atacama Desert, Chile | Located at the Chajnantor plateau. |
| Northeastern Space Radio Observatory | Eusébio, Brazil | 14,2 m telescope |
| Itapetinga Radio Observatory | Atibaia, Sao Paulo, Brazil | 13,7 m telescope, operates in the K and Q bands, with cryogenic receivers |
| Brazilian Decimetric Array (BDA) | Cachoeira Paulista, Sao Paulo, Brazil | 38-element radio telescope interferometer working in the frequency range of 1.2-6.0 GHz. The final baseline will be 2.27 km in the East-West and 1.17 km in the South directions, respectively. This instrument will obtain radio images from the sun with a spatial resolution ~4x6 arc seconds. Located in Cachoeira Paulista, Sao Paulo, Brazil (Latitude 45° 00' 20" West and Longitude 22° 41' 19" South) |
| Swedish-ESO Submillimetre Telescope (SEST) | La Silla Observatory, Atacama Desert, Chile | 15 m telescope. Decommissioned in 2003 |
Read more about this topic: List Of Radio Telescopes
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—Benjamin Harrison (1833–1901)