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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."
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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.
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