AAVSO- A resource for amateur and professional astronomers
ZoomMeet AAVSO- The American Association of Variable Star Observers
A major resource for amateurs and professionals in astronomy.
Three Wednesdays: Oct. 18, 25, Nov. 1 via Zoom, 7-9 PM. $35/45(non-member).
Click on course title for more information, and a bonus talk about binary stars.