100-inch telescope south float, pedestal and worm wheel, Mount Wilson Observatory — Calisphere

At Mt. Wilson, scientists celebrate 100th birthday of the

Polar axle and worm wheel of the 60-inch telescope, in the Mount

Worm wheel and quick motion right ascension drive of the 100-inch

Mount Wilson Institute — Harlow Shapley Project

100 Inch Telescope Mt. Wilson Observatory, California CA Postcard

Mount Wilson Observatory: Facts & Discoveries

Mount Wilson Observatory Building the 100-inch Telescope

Mount Wilson Observatory Building the 100-inch Telescope

Planet Mars, As Seen by the 100 Inch Telescope at Mount Wilson

Mount Wilson Observatory