Astro Tucson is an outreach program of the National Optical Astronomy Observatory. It is based on Project ASTRO, developed by the Astronomical Society of the Pacific.
Steward Observatory is located at the University of Arizona. Steward Observatory operates observatory facilities on Kitt Peak, Mt. Bigelow, Mt. Lemmon, and Mt. Graham.
The Astronomical League promotes astronomy education and research, and supports amateur astronomical societies. They publish The Reflector quarterly newsletter.
The Night Sky Network is a nationwide coalition of amateur astronomy clubs bringing the science, technology and inspiration of NASA’s missions to the general public. It is funded by NASA and managed by the Astronomical Society of the Pacific.
International Dark Sky Assn (IDA) supports the ongoing effort to preserve dark skies and starry nights – founded by TAAA Members.
The Astronomical Society of the Pacific supports amateur astronomers through many programs including Project ASTRO and the Night Sky Network. They Publish the Mercury magazine as well as journals for professional astronomers.