Mount Wilson Observatory

@MtWilsonObs

Where we discovered our place in the universe. Home to the 60 & 100-inch telescopes, as well as the CHARA Array.

34.2253° N, 118.0573° W mtwilson.edu Joined March 2014

205 Following 8.2K Followers 1.4K Posts

Latest posts 5

Mount Wilson Observatory @MtWilsonObs 3d

Sat, Nov 7 | Sunset–1AM
Join Mount Wilson Observatory and LAAS for our final FREE star party of the season! See Saturn, Andromeda, the Pleiades, nebulae, and star clusters. Donations welcome!
More info: mtwilson.edu/events/starpar…

Mount Wilson Observatory @MtWilsonObs Oct 27

Mount Wilson Observatory will be closed for roadwork from 6 PM Tuesday, October 27, through 8 AM Thursday, October 29. We look forward to seeing you this weekend!
Cosmic Café: Sat 10–5, Sun 10–4
Docent Tours: 11:30 AM & 1 PM both days.
See you on the mountain!

Mount Wilson Observatory @MtWilsonObs Oct 15

Just a few tickets left! Join us this Sat, Oct 17 for our final Talks & Telescopes of the season. Hear Observatory history from founder George Ellery Hale’s grandson, Sam Hale, then observe through our historic 60-inch & 100-inch telescopes!
🎟️ mtwilson.edu/events/lecture…

Mount Wilson Observatory @MtWilsonObs Oct 11

A special evening closes our 2026 Talks & Telescopes season Oct 17. Sam Hale, grandson of founder George Ellery Hale, shares a personal look at his grandfather’s remarkable life & legacy—followed by observing on the historic 60- & 100-inch telescopes.
🎟️ mtwilson.edu/events/lecture…

Mount Wilson Observatory @MtWilsonObs Oct 8

What a way to close out the season! A sold-out crowd filled the 100-inch dome for our final concerts of 2026, ending the afternoon on their feet, cheering the piano quartets. Thank you to our musicians, audiences & Artistic Director Cécilia Tsan. See you in the dome in 2027!