“In 1908 it was the largest telescope in the world,” says telescope operator Tom Mason. He’s one of a devoted cadre of amateur astronomers and retired engineers who keep things going atop Mt. Wilson.

The 100-inch telescope mirror is transported to Mt. Wilson Observatory in July 1917. (Courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library) ...

Dating back to 1904, Mount Wilson Observatory was founded by Dr. George Ellery Hale in the mountains of Pasadena where some of the world's oldest telescopes are housed. When Hale established the ...

Tom Meneghini, executive director of the Mount Wilson Institute, is photographed Sept. 23 next to the 100-inch Hooker telescope located at the Mount Wilson Observatory in Los Angeles.

With a total of six telescopes at the top of Mount Wilson, including a 101-inch one and a two solar ones, many people visit the location north of Pasadena yearly, including the likes of Edwin ...

Mt. Wilson is around an hour’s drive from downtown Los Angeles. But when you get there, it can feel like you are on the forest moon of Endor. With its clusters of spiky radio tower spires and ...

Mount Wilson's 60-inch and 100-inch telescopes—the largest in the world made available to the public—will be open for stargazing. By: Blair Ingenthron Mar. 26, 2023 POPULAR ...

Hale quickly got to work building an even bigger telescope on Mount Wilson than he’d had back in Wisconsin, and in December 1908, a new 60-inch telescope was used for the first time, dwarfing ...

The Mount Wilson Observatory was once home to the world’s largest telescope, and more than a century ago, on Jan. 1, 1925, astronomer Edwin Hubble made one of his most important discoveries at ...

It will be a rare sight to behold, and Mount Wilson Observatory is not going to miss it.. On April 8, there will be a solar eclipse and the folks at the observatory are inviting the public to come ...

It will be a rare sight to behold, and Mount Wilson Observatory is not going to miss it. On April 8, there will be a solar eclipse and the folks at the observatory are inviting the public to come ...