There are seats available in the CHOICE course, Variable Star Classification and Light Curves. The course runs May 4 - June 3, 2026, and is taught by Blake Crosby. Cost is $35.00 for AAVSO members, $60.00 for non-members. Click here to enroll.
This valuable and very useful course is an overview of the types of variable stars most often observed by AAVSO observers. We explain the construction of light curves and phase diagrams. We discuss the physical processes behind what makes each type of variable and how this is demonstrated in their light curves. We link these salient features of the light curve to common observing practices for each type. Questions? Contact Elizabeth Waagen, eowaagen@aavso.org