COVID-19 Update

Based on direction from Sonoma County, RFO is requiring guests to wear face masks at all events, regardless of their vaccination status. And, of course, if you are not feeling well or have a fever, please stay home. As of October 1, 2021, all guests are required to show proof of full vaccination or a negative COVID test within 48 hours in order to attend a live event. Thank you!

RFO Events and Activities

The Robert Ferguson Observatory (RFO) is open to the public at least once a month, usually on a Saturday near the time of the New Moon. Friendly and knowledgeable docents are available to answer your questions. Select an event below for more details, or visit for more information and to purchase tickets, or visit our full Calendar. All events require advance tickets.

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Select an event above for more details, or visit our full Calendar.