The Haleakala High Altitude Observatory Site, on the Island of Maui is the site of Hawaii's first astronomical research. At 10,000 feet elevation, Haleakala is above one third of the earth's atmosphere. "Seeing" conditions on Haleakala can be as good as on Mauna Kea, a site recognized to have the best astronomical conditions for ground-based observatories.

Telescopes at Haleakala Observatory

• Faulkes Telescope North
• Department of Defence 3.67m Advanced Electro Optical System Telescope