The Greenland Telescope (GLT) is a 12 meter radio telescope located near Thule Air Base in central Greenland which went into service at the end of 2017, sponsored by several groups including National Radio Astronomy Observatory and Academia Sinica Institute of Astronomy and Astrophysics. The antenna is re-used, originally built as a prototype for Atacama Large Millimeter Array. A primary purpose is to be used for very-long-baseline interferometry, specifically, the Event Horizon Telescope. With the South Pole Telescope, a 12000 km north/south baseline is possible.
Equipment includes 86 GHz, 230 GHz, and 354 GHz single-pixel receivers for VLBI use.