Support the AAVSO: Donations and Membership

Donate to AAVSO, an international nonprofit:

Your donations support the AAVSO's work of "enabling anyone, anywhere, to participate in scientific discovery through variable star astronomy."


Become an AAVSO member or renew your membership:

AAVSO members are those in our international community who pay annual dues. In exchange for dues, members receive exclusive access to certain AAVSO observing tools, programs, discounts, and more.