Paul Collison

The 150ft Mount Wilson Solar Tower

Jurassic technology that was used until recently at the Solar Observatory.

The image of the Sun with a scale photo of the largest Sun spot seen at the Observatory. The Earth at the same scale is represented by the tiny steel ball.

A picture of people taking pictures of the Sun.

Steve Padilla points out Solar features as Cynthia Hunt broadcasts via Periscope.

Professional Astronomers amazed at the setting Sun.

The final minutes of the setting Sun.

The 100-inch Hooker telescope, which was the largest telescope in the world from its completion in 1917 to 1949,

The 100-inch Hooker telescope, which was the largest telescope in the world from its completion in 1917 to 1949,

The 100-inch Hooker telescope, which was the largest telescope in the world from its completion in 1917 to 1949,

Mount Wilson Director Tom Meneghini shows the photographic back that was used to hold the glass plates on the 100-inch telescope.

The Solar Tower and the various communications towers on Mount Wilson.

Erika Carlson uses the 60-inch Hale telescope to investigate the Moon while everyone else investigates their sandwiches.

Observing with the Mount Wilson 60-inch (1.5 m) Hale telescope.

Dome rotation on the Mount Wilson 60-inch Hale telescope.

Dome rotation reveals the Moon.

The bright Moon doesn't stop observing.

Observing with the Mount Wilson 60-inch (1.5 m) Hale telescope.

Ghost ladder

The dome rotates as the 60-inch telescope is repositioned. The ladder remains steady in its designated safety area.

Another dome rotation for another target.

Observing with the Mount Wilson 60-inch (1.5 m) Hale telescope.

Chris Burns nears the end of a successful night as telescope operator.