Reminder - Sunspots CHOICE course registration closes Oct 5
There are seats available in the CHOICE course, Observing and Counting Sunspots. The course runs October 6 - October 31, 2025 - STARTS MONDAY - and is taught by Raffaello Braga. Cost is $35.00 for member/$60.00 for non-member. Click here to enroll. To become an AAVSO member, click here.
Observing and counting sunspots is one of the most important and simple methods for monitoring the activity of our nearest star. This four weeks course will provide the fundamentals of visually and photographically observing, monitoring, and recording sunspots with the aim of involving participants in the determination of the American Relative Sunspot Number (RA). The course will focus on several topics: equipment, safety issues, basic concepts about sunspot activity, morphology, classification and evolution, recording and reporting sunspot observations both visually and photographically, using software for measuring sunspot positions, basic concepts on solar white light digital imaging and how it can usefully complement visual observations and sunspot counts. Enroll by Sunday, October 5, noon ET. Questions? Contact Elizabeth Waagen, eowaagen@aavso.org