RFO

For Detailed Information

To learn more about events
listed here, see
Star Parties
and Classes

 

Where we are:

Nestled in the hills of
Sugarloaf Ridge State Park

Longitude: West 122° 30' 28"
Latitude: North 38° 26' 18"
Elevation: 1275'

Map and Directions

 

Current sky conditions:

Clear Sky Chart

 

What to Wear:

Warm layers, gloves and hats. Wool socks and sturdy shoes are helpful. Nights can be very cold. Bring a flashlight. We will provide red cellophane covers to protect your night vision.

 

RFO Calendar

Upcoming RFO Events

Monthly Listing of Public Events and Classes

April 2019
  • Monday, 4/1/2019 - Night Sky Spring Series
    Time: 7:30 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #4 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Friday, 4/5/2019 - What's Up CANCELLED
    Time: 7:30 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party event, open to the public.
  • Saturday, 4/6/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 4/6/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Friday, 4/12/2019 - Star Party (en espaol)
    Time: 8 PM - 11 PM
    • Come learn more about our universe! Robert Ferguson Observatory docents will guide us in a bilingual astronomical talk and in the use of telescopes for you and your family to observe the cosmos. The event begins at 8 p.m. in the Observatory at Sugarloaf Ridge State Park. We recommend wearing layers and bringing a small flashlight. If you have your own telescope, feel free to bring it! Admission is $5 for adults, free for minors. Parking is $10 per vehicle. Contact Alma at alma@sonomaecologycenter.org or call (707) 833-5712 with questions.
  • Monday, 4/29/2019 - Night Sky Spring Series
    Time: 7:30 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #5 of 6)
      Tickets may be purchased via Brown Paper Tickets.

May 2019
  • Saturday, 5/4/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 5/4/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 5/6/2019 - Night Sky Spring Series
    Time: 7:30 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #6 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Saturday, 5/11/2019 - Astronomy Day Planet Walk Hike
    Time: 10 AM - 12 Midnight (at -)
    • Please join us for a guided hike along the Planet Walk with RFO docents. Along the way they will speak about each planet in our solar system, with chances to view local wildflowers along the way. This hike come with passports booklets for all participants, where you will receive a stamp for each planet you reach. There will be two different options for this hike: 1, travel along Meadow trail to Brushy Peaks until you reach Uranus, then head back on Hillside trail. This is a 2 mile loop with 250 ft elevation gain. Then option 2, Do the full Planet Walk Loop to Pluto of 6.3 miles with a 1100 ft elevation gain traveling along Brushy Peaks to Grey Pine and back through Meadow. Cost is $10 per person parking fees still apply.

      Tickets available via Brown Paper Tickets
  • Saturday, 5/11/2019 - RFO at Cal Academy
    Time: 10 AM - 4 PM (at California Academy of Sciences, San Francisco)
    • Come join RFO at the California Academy of Science's Astronomy Day event in Golden Gate Park. We'll have hands-on activities for kids and much more!
  • Saturday, 5/11/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 5/11/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Friday, 5/31/2019 - What's Up
    Time: 7:30 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party event, open to the public.

June 2019
  • Saturday, 6/1/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 6/1/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 6/3/2019 - Night Sky Summer Series
    Time: 8 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #1 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Tuesday, 6/4/2019 - Focus Night: Jupiter
    Time: 8 PM - 12 Midnight (at -)
    • Jupiter is the focus of the night.
  • Monday, 6/24/2019 - Night Sky Summer Series
    Time: 8 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #2 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Thursday, 6/27/2019 - What's Up
    Time: 8 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party, open to the public.
  • Saturday, 6/29/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 6/29/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)

July 2019
  • Monday, 7/1/2019 - Night Sky Summer Series
    Time: 8 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #3 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Monday, 7/22/2019 - Night Sky Summer Series
    Time: 8 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #4 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Saturday, 7/27/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 7/27/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 7/29/2019 - Night Sky Summer Series
    Time: 8 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #5 of 6)
      Tickets may be purchased via Brown Paper Tickets.

August 2019
  • Friday, 8/2/2019 - What's Up
    Time: 8 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party, open to the public.
  • Saturday, 8/3/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 8/3/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Saturday, 8/24/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 8/24/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 8/26/2019 - Night Sky Summer Series
    Time: 8 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #6 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Thursday, 8/29/2019 - What's Up
    Time: 8 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party, open to the public.
  • Friday, 8/30/2019 - Focus Night: Saturn
    Time: 7:30 PM - 12 Midnight (at -)
    • Saturn is the focus of the night

September 2019
  • Monday, 9/23/2019 - Night Fall Series
    Time: 7 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #1 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Thursday, 9/26/2019 - What's Up
    Time: 8 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party, open to the public.
  • Friday, 9/27/2019 - Observing Lab
    Time: 8 PM - 12 Midnight
    • -
  • Saturday, 9/28/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 9/28/2019 - Public Star Party
    Time: 8 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 9/30/2019 - Night Fall Series
    Time: 7 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #2 of 6)
      Tickets may be purchased via Brown Paper Tickets.

October 2019
  • Saturday, 10/5/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 10/5/2019 - Public Star Party
    Time: 7 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 10/21/2019 - Night Fall Series
    Time: 7 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #3 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Thursday, 10/24/2019 - What's Up
    Time: 7:30 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party, open to the public.
  • Saturday, 10/26/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 10/26/2019 - Public Star Party
    Time: 7 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 10/28/2019 - Night Fall Series
    Time: 7 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #4 of 6)
      Tickets may be purchased via Brown Paper Tickets.

November 2019
  • Monday, 11/18/2019 - Night Fall Series
    Time: 7 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #5 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Friday, 11/22/2019 - What's Up
    Time: 7 PM - 12 Midnight (at -)
    • What's Up is RFO's limited-ticket star party, open to the public.
  • Saturday, 11/23/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Saturday, 11/23/2019 - Public Star Party
    Time: 6 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)
  • Monday, 11/25/2019 - Night Fall Series
    Time: 7 PM - 12 Midnight
    • Learn the constellations, stars, deep sky objects, and more. Includes observing. (Class #6 of 6)
      Tickets may be purchased via Brown Paper Tickets.
  • Friday, 11/29/2019 - Public Solar Observing
    Time: 11 AM - 3 PM
    • Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.
  • Friday, 11/29/2019 - Public Star Party
    Time: 6 PM - 12 Midnight
    • Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory's three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.

      $5.00 per adult, under 18 FREE.
      (Plus State Park Parking Fee $10.00 per vehicle.)

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