COVID-19 Update

The Robert Ferguson Observatory is deferring to state and Sonoma County guidelines, and no longer requires anyone to wear a mask in indoor public settings. If you are not feeling well or have a fever, please stay home. Please note that we ask all guests to be fully vaccinated or take a negative COVID test within 48 hours of an observatory 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.

Contact Us

For general inquiries and comments, please email us at [email protected] or call us at

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