The two main facilities are the single-dish IRAM 30m telescope located at 2850 m altitude on Pico Veleta in the Spanish Sierra Nevada (Andalucia, Spain), and the ten-antenna Northern Extended Millimeter Array (NOEMA) radio interferometer at 2550 m in the French Alps. Both sites are at high altitude to reduce the absorption by water vapour in Earth’s atmosphere. The telescopes are supported by the IRAM offices and laboratories in Granada and Grenoble, respectively. The IRAM headquarters are on the campus of Université Grenoble Alpes near Grenoble.
