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.
A list of benefactors  is available (starts in 2007). Thank you for supporting the AAVSO!
All donations are tax deductible to the extent the law will allow. If you have questions, please contact the AAVSO Development Director at firstname.lastname@example.org  or call 1-888-802-7827 toll free.
You can also support the AAVSO by becoming a member or renewing your membership each year. If you would like to renew your current membership in the AAVSO, please follow the instructions at this link . If you are not a member but would like to become one, please click here .