Associations
Links
American Astronomical Society (AAS)
Established 1899, AAS is the major professional organization in North America for astronomers, other scientists and individuals interested in astronomy.
The International Astronomical Union (IAU)
founded in 1919, has a mission to promote and safeguard the science of astronomy in all its aspects through international cooperation. With now over 8,300 individual members and 60 Adhering Countries worldwide, the IAU plays a key role in promoting and coordinating worldwide cooperation in astronomy. The IAU is also the sole internationally recognised authority for assigning designations to celestial bodies and surface features on such bodies.
International Occultation Timing Association (IOTA)
was established to encourage and facilitate the observation of occultations and eclipses. It provides predictions for grazing occultations of stars by the Moon and predictions for occultations of stars by asteroids and planets, information on observing equipment and techniques, and reports to the members of observations made.
Global Network of Astronomical Telescopes (GNAT)
http://www.gnat.org/~ida/gnat/
a non-profit organization dedicated to being a catalyst and information source for all those interested in research and education using relatively small astronomical telescopes.
The Astronomical League
is composed of over two hundred local amateur astronomical societies from all across the United States. Find out about our GREAT national conventions (ALCons)! Member Societies, Regions, Astronomy Day, Awards.
American Association Of Variable Star Observers (AAVSO)
Professional and Amateur collection, research, and analysis of variable star observations.
International Organisations for Archaeoastronomy / Cultural Astronomy
The Planetary Society
A nonprofit organization that promotes exploration of the solar system and the search for extraterrestrial intelligence.
Royal Astronomical Society of Canada
Key activities include research and observing planets, stars, celestial phenomena and the abatement of light pollution.
International Association of Geodesy
Member information, meeting announcements, publications and reports, awards, and links to related sites.
Scientific Committee on Solar-Terrestrial Physics
http://www.ngdc.noaa.gov/stp/SCOSTEP/scostep.html
Promotes international interdisciplinary programs in solar-terrestrial physics, and organizes and coordinates such programs. Site has a newsletter, meetings and events, member directory, announcements, and links to related groups.
International Earth Rotation Service (IERS)
Works to maintain the International Celestial Reference System and Frame, and the International Terrestrial Reference System and Frame, and to provide timely and accurate data on the Earth's orientation for current use and long-term studies. Site describes the group's structure and function.
Astronomical Society of the Pacific
Disseminates astronomical information. The ASP has become the largest general astronomy society in the world, with members from over 70 nations.
Antique Telescope Society
http://www.irhino.com/oldscope/
An international organization of colleagues interested in antique astronomical telescopes, books, binoculars, and related materials.