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Coming Events

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

Star Party

Saturday, October 10

Solar Observing: 11-3
Star Party begins 8pm

Night Sky Classes

Sep. 15, Oct. 6, Oct. 13,
Nov. 3, Nov. 10, Dec. 8

Learn about the seasonal sky, with telescope
observing after class. Details

New Docent Training

Begins Thursday, September 10
Become a docent at RFO! Details
To register, contact
Steve Smith at ssmith@rfo.org.

"Before Telescopes"
From Stonehenge to Galileo

A new series of
public presentations on the History of Astronomy, each lecture focusing on a different point in history.

Exploring what early astronomers learned without telescopes—just sharp eyes and sharp minds— is a good way to understand the basics of observational astronomy.

Presentations are given free during public
Star Parties

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


Sugarloaf Ridge State Park

"Team Sugarloaf" operates Sugarloaf Ridge,
including the campground.
Team Sugarloaf is a unique partnership of five nonprofit organizations that have 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!

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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Click on chart for detailed explanation.

Current weather is updated every five minutes with data collected by the Boltwood Cloud Sensor-II installed
at the Robert Ferguson Observatory.