The American Association of Variable Star Observers is a registered 501(c)(3) non-profit scientific and educational organization. As such, we depend on the financial support of our members, benefactors, friends, foundations and corporate partners to continue our scientific and educational programs.

All donations are tax deductible to the extent the law will allow. If you have questions, please contact the AAVSO Development Director at donations@aavso.org or call 1-888-802-7827 toll free.