MMT Observatory MMT Observatory The MMT Observatory (MMTO) is an astronomical observatory on the site of Fred Lawrence Whipple Observatory (IAU observatory code 696). The Whipple observatory complex is located on Mount Hopkins, Arizona, US (55 km south of Tucson) in the Santa Rita Mountains. The observatory is run by the University of Arizona and the Smithsonian Institution, and has a visitor center in nearby Amado, Arizona. The MMTO is the home of the MMT (formerly Multiple Mirror Telescope), which currently has a primary mirror 6.5 m in diameter. The name originally comes from the fact that the light gathering for the
Goldendale Observatory State Park Goldendale Observatory State Park Goldendale Observatory State Park is an educational facility on the northern side of Goldendale, Washington, notable for its unusually large public telescope. The state park occupies atop a hill. Access is via a winding paved road through an oak forest. The site includes a small picnic area, interpretive center, amphitheater, and the observatory. There are several telescopes on-site, including portable Dobsonians, a permanently mounted Hydrogen-Alpha solar telescope, and the primary instrument; a 24.5-inch reflector which is housed in the South Dome. The facility receives 30-40,000 visitors annually. The main telescope is the reason for the existence