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Coming Events

(Observatory is open to the public
ONLY for scheduled events).

Star Party

Saturday, August 24

Solar Observing: 11am-3pm
Star Party: 8pm

Focus Night: Saturn

Friday, August 30, 7:30pm-Midnight

SATURN... a world that continues to dazzle and mystify. This iconic planet, sixth from the Sun, is home to an orbiting array of intriguing and unique worlds of its own. Come learn about this fascinating planetary system and discover the summer sky.

Tickets may be purchased via Brown Paper Tickets.

Night Sky Classes


Jun. 3, Jun. 24, Jul. 1,
Jul. 22, Jul. 29, Aug. 26

A series of six classes focusing on the Spring constellations and their deep-sky objects. Classes last about an hour with telescope observing after class. For prices and more information go to our Classes page.

New Docent Training

Begins Tuesday, Sept. 10, 7pm

If you've ever thought about becoming a volunteer at the Observatory, now's the time! The introductory meeting is followed by frequent training sessions on the telescopes, general astronomy and much more. For more information, see our Volunteer page.

Fill out a Volunteer Application Form and join us!


Want to help us keep our doors open?


RFO at night

Above: The Observatory at night. Photo by Mark Hillestad
Top right photo of Refractor Telescope by Jerry Telfer


Rent an

Yes, you can!
Treat your family, friends,
or group of up to 50 people
to a night with the stars!


Weather Forecast

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Sugarloaf Ridge
State Park

"Team Sugarloaf" operates Sugarloaf Ridge,
including the campground. Five nonprofit organizations formed a unique partnership that has worked tirelessly to keep our park open.  

Partners are: Sonoma Ecology Center; United Camps, Conferences and Retreats; Valley of the Moon Natural History Association; Sonoma County Trails Council; and Valley of the Moon Observatory Association.  

With expertise in campground operations, ecological restoration, astronomy, trails management, and volunteer recruiting and training, Team Sugarloaf is creating new opportunities for Sugarloaf Ridge and its visitors.  Visit sugarloafpark.org for more information.

Come to stargaze and camp at Sugarloaf Ridge!