Sonoma Sun Event Calendar

Solar viewing, star party at observatory Robert Ferguson Observatory

Saturday October 6th - 11:00am

On Oct. 6, free solar viewing runs 11 a.m.- 3 p.m. at the Robert Ferguson Observatory at Sugarloaf Ridge State Park. View Earth’s closest star and learn about sunspots, prominences, flares and more. Observe with both visible light and radio telescopes. Free.

A Star Party starts at dusk (8 p.m.) when the observatory’s three main telescopes are open for viewing. Presentations on astronomical topics will be given throughout the evening. Additional telescopes will be set up in front of the building and friendly and knowledgeable docents are available to answer your questions. $3 at the door. Find out more at