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CHOICE Courses: Open for Registration!

We recently released a significant update to the backend systems for the AAVSO website. While most of the bugs introduced by this update have been fixed, there may still be problems we haven't fixed. If you run into a problem, please email

The next round of CHOICE courses are open for registration.

Running August 20th through September 20th, we will be presenting both "Developing a Visual Variable Star Observing Program" and "Variable Star Classification & Light Curves." Visit the CHOICE in Astronomy main page for class descriptions and more information about the Carolyn Hurless Online Institute for Continuing Education in Astronomy.  Visit the AAVSO online store to register for a course.

We hope to "see" you there!

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484