National Radio Astronomy Observatory

The National Radio Astronomy Observatory (NRAO) is a United States National Science Foundation (NSF) radio astronomy research organization operating a number of radio telescopes around the world. Locations and equipment:

• Socorro, New Mexico: VLA.
• Hawaii, the continental US, and Virgin Islands: VLBA.
• Atacama Desert, Chile: ALMA.

Previously operated by NRAO:

• Green Bank, West Virginia: GBT and Green Bank 140 Foot Telescope. This site, now the Green Bank Observatory (GBO), was the original NRAO, and for over a decade, the NRAO consisted of this site.
• Kitt Peak, Arizona: ARO 12m Telescope.

In development:

• ngVLA.