Hours & Directions

Mon, Tue: Closed

Wed - Sun : 10am - 5pm

  • Sponsored by Best of the East Bay


Explore the Skies at the Chabot Observatories


Chabot’s giant, historic telescopes offer a unique way to experience the awe and wonder of the Universe. Check out celestial viewing day and night. Our observatory deck offers breathtaking views 1,500 feet above the Bay.

Don’t Miss: A View to the Stars exhibition inside the telescope domes.

The observatories at Chabot Space & Science Center are located 37.819 degrees North latitude and 122.182 degrees West longitude.

The telescopes will be closed on Christmas Eve, Christmas Day, and New Years Eve.

Evening Viewing

Experience spectacular night sky viewing. It’s the best kept secret in the Bay Area. See the magnificence of our telescopes in action!

Complimentary admission to the Observatory Deck on Friday and Saturday evenings only*
*Weather permitting; May close for special events

Regular hours:

  • Friday & Saturday Evenings: 7:30pm - 10:30pm
    (during the summer months, telescopes open once the skies are dark)
  • Use the outside gate around the back of the Center. Follow the signs to the observatory entrance gate.

General Admission guests are welcome to access the telescopes through Gruener Astronomy Hall with in and out privileges.

Daytime Viewing

During your visit on Saturday and Sunday afternoons our volunteers on the observatory deck will have special telescopes out to view the Sun, Moon, or Venus. Free with General Admission, weather permitting, of course!

  • Staffed observatory hours: 12pm - 5pm
  • Observing hours: 1pm - 4pm

Solar Viewing

At Chabot, when the Sun's up, the Sun comes out! With a spectrum of solar viewing aids, including Sun-watching scopes and filters as well as near-live satellite images and movies, explore the many faces of Earth's star. Sunspots, prominences, flares, and coronal mass ejections are all living solar events that you may witness personally. Chabot volunteers and staff will guide you through your personal solar experience, helping to give you a new appreciation of the power, the magnitude, and the sheer beauty of the Sun. Contact the box office for current solar viewing hours. 


About Chabot’s Telescopes

Chabot boasts three telescopes on its observatory deck. Nellie, Chabot‘s youngest and most powerful, is housed in a rolling roof observatory, allowing access to 180 degrees of sky. This modern, research-quality telescope offers breathtaking views of the cosmos.

The impressive 20" telescope, named Rachel, is the largest refractor in the western United States regularly open to the public. Its companion, the 8" Alvan Clark refractor, named Leah, is the original 1883 instrument donated by founder Anthony Chabot.