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Support the AAVSO


Registrations for our 2020 Annual Meeting and Workshops are OPEN!

Please note: registration closes October 15, 2020

Registration open for August's free Observing Section Webinars

Now available:

the first in a series of instructional videos for those interested in helping with AAVSO's VStar development

AAVSO Ambassadors providing astronomy and educational outreach: check out the latest video!

Pick a Star

Type star name then click action.
Recent Activity

Variable Star Observations in Database:

41,865,147 and Counting ...
Last Observation Received:

12 min 18 sec ago by SLH - Lawrence Shotter (US)

CQ TAU   Aug 11.3965   9.5Vis.   

Plot CQ TAU light curve


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