American Association of Variable Star Observers

About This Association

The AAVSO was founded in 1911 to coordinate variable star observations—made largely by amateur astronomers—for Harvard College Observatory. The AAVSO was incorporated in the Commonwealth of Massachusetts in 1918 as a non-profit scientific and educational organization. Today, as an independent, private research organization headquartered in Cambridge, Massachusetts, with active participants in more than 100 countries, and an archive of over 34 million variable star observations, it is the world’s largest association of variable star observers.

Publications

Conventions

Annual

Specialties:

1. Science

Information Summary