Nobeyama Radio Observatory 45-m Telescope

…45-metre (148-foot) radio dish near Nobeyama, Japan, is used for observations at wavelengths as short as 3 mm (0.12 inch). The French-Spanish Institut de Radioastronomie Millimétrique (IRAM) in Grenoble, France, operates a 30-metre (100-foot) antenna at an altitude of 2,850 metres (9,350 feet) on Pico Veleta in the Spanish Sierra…