MWO founder George Ellery Hale atop Mt. Wilson, 1904 Huntington Library


Join Friends of MWO


60-in Telescope Viewing

Visit MWO

Tower Cam

The Cosmic Cafe

Station Fire Retrospective

Filming at MWO

Weather & Road Info

Driving Map & Directions

Contact Information

Mount Wilson Observatory is operated by the Mount Wilson Institute under an agreement with the Carnegie Institution of Washington. The Observatory occupies lands belonging to the USDA Forest Service set aside under a long-term leasehold agreement between CIW and the USDA Forest Service. The Observatory subscribes to the USDA non-discrimination policy as expressed here.

Banner photographs by David Jurasevich
In the first half of the 20th Century, eminent astronomers such as Harlow Shapley and Edwin Hubble used the incomparable facilities of Mount Wilson Observatory to forever alter humankind's view of our place in a vast and expanding Universe.

Today, Mount Wilson's original solar and night-time telescopes, the world's largest for two generations of astronomers, have been joined by new facilities achieving unprecedented high-resolution views of the stars.
Copyrighted photos courtesy Steve Golden, David Jurasevich, Tom Varden, and the Huntington Library.

Visit Mount Wilson - The Observatory is open daily from 10 am to 5 pm through November 30, 2014. On weekends, have lunch at our Cosmic Cafe, open 10 am to 5 pm on Saturdays and Sundays, and then take a 1 pm Guided Tour that includes entry onto the observing floor of the 100-inch Telescope. A shorter tour is now also offered at 2 pm on Saturdays only. At other times, including the winter months, you can arrange for a Special Tour.

Look through the 60-inch telescope - Mount Wilson's historic 60-inch telescope, which revealed before World War I that the sun is not located at the center of the Milky Way, is now available for reservations during the 2014 season. The views of planets, star clusters, nebulae, and galaxies through the 60 inch, among the largest telescopes in the world accessible to the public, are unforgettable.

The image at left is of the region of the lunar crater Bullialdus taken by Art Cole with his iPhone at the 60-inch in April 2013. Click here a higher resolution view and more information.

Explore Mount Wilson On-Line -

Be a Friend of Mount Wilson - You can enjoy a special relationship with MWO through a membership in our Friends of Mount Wilson Observatory organization. Explore the benefits of FOMWO membership and pick the level which most suits you. All members receive our quarterly publication Reflections, and we are making the March 2013 issue available here as a preview of what you can look forward to four times a year. This issue contains an extraordinary biographical study of MWO founder George Ellery Hale by Reflections co-editor Marilyn Morgan.

Photo courtesy Eric Simison, Sea West Enterprises

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