The AAVSO International Database (AID) has tens of millions variable star observations going back over one hundred years. It is the largest and most comprehensive digital variable star database of its kind in the world. Over 1,000,000 new variable star brightness measurements are added to the database every year by hundreds of observers all over the world.

Peranso lets you plot AAVSO light curves directly through the Internet by clicking on the Add AAVSO light curve button in the ObsWin toolbar. But you can also import AAVSO AID text files or import AAVSO EFF text files.

(1) We acknowledge with thanks the variable star observations from the AAVSO International Database contributed by observers worldwide, and used in this research.