Mount Wilson (California) a new Mt. Wilson Hotel. In 1908 a 60-inch (1524 mm) telescope was completed at the summit, and in 1910 the Solar Tower was erected. In 1913 the hotel burned down and was replaced by a second hotel that lasted until its demolition in 1966. The Toll Road opened to automobiles in 1912 and lasted until 1936. In 1917, the 100-inch Hooker Telescope was completed and saw first light and would be the world's largest telescope until the opening of the 200-inch Hale Telescope at Palomar Observatory in 1948. In 1919, American astronomer Edwin Hubble arrived at Mt. Wilson and,
IRAM 30m telescope from the Solar System to interstellar dust and gas or cosmology. Formally started in 1980 and in use for astronomical observations beginning in 1984, the observatory features a radio telescope produced by MT Mechantronics with a pedestal-yoke design. The 30m telescope is one of the largest and most sensitive millimeter telescopes in the world, and is equipped with a suite of heterodyne receivers and continuum cameras operating at wavelengths of around 3, 2, 1, and 0.9mm. IRAM offers guided tours through the observatory and public talks during the summer months. IRAM 30m telescope The IRAM 30m millimeter radio telescope is