These facilities provide (or will provide) some access to the entire U.S. community. In those cases where that access is part of TSIP or the ReSTAR program, the time is available through the NOAO time allocation process.

• CHARA – The Center for High Angular Resolution Astronomy is an interferometric array of six 1-meter telescopes on Mount Wilson in southern California.
• Hale – The 5m Hale telescope is located at Palomar Observatory in southern California. Through a partnership agreement funded as part of the ReSTAR program, the community has access to approximately 10 nights per semester through NOAO.
• IRTF – The NASA Infrared Telescope Facility is a 3.0 meter telescope optimized for infrared observations, and located at the summit of Mauna Kea, on the big island of Hawaii.
• Keck – The two 10m Keck telescopes are located on Mauna Kea, on the big island of Hawaii. As a result of TSIP awards, the community has access to a small number of nights through NOAO.
• LBT – The Large Binocular Telescope is a telescope on Mount Graham in southern Arizona consisting of two 8.4m mirrors on a common mount. As a result of TSIP awards, the community has access to a small number of nights through NOAO.
• Magellan – The two 6.5m Magellan telescopes sit atop Cerro Las Campanas in Chile. As a result of TSIP awards, the community has access to a small number of nights through NOAO.
• MMT – The 6.5m MMT is located on Mount Hopkins, in southern Arizona. As a result of TSIP awards, the community has access to a small number of nights through NOAO.
• Subaru –  The 8.2m Subaru Telescope is located on Mauna Kea, on the Big Island of Hawai'i.  As a result of the Gemini-Subaru exchange program, the community has access to a small number of nights through NOAO.

Other Operating Facilities

Listed here are some other operating facilities, which currently do not provide open access to the U.S. community.

• ARC - The Astrophysics Research Consortium 3.5m telescope is located at Apache Point Observatory in New Mexico. It is shared by a number of public and private universities.
• CFHT - The Canada-France-Hawaii Telescope is a 3.6m telescope on Mauna Kea. Observations are carried out primarily through queues, which allow observers to take advantage of the excellent image quality.
• HET - The Hobby-Eberly Telescope is a fixed-elevation telescope at McDonald Observatory. It has an effective aperture of 9.2 meters, and several instruments for optical spectroscopy.
• NPOI -The Navy Prototype Optical Interferometer on Anderson Mesa near Flagstaff is operated by the USNO Flagstaff Station in collaboration with the Naval Research Lab and the Lowell Observatory.