The Hale Telescope was constructed in 1939, but the construction and delivery of the primary mirror was delayed until 1948 by World War II. This cast-concrete dummy was made to have the same size and weight as the actual mirror, and was used to during the initial setup of the telescope mechanics.
The Hale Telescope was constructed in 1939, but the construction and delivery of the primary mirror was delayed until 1948 by World War II. This cast-concrete dummy was made to have the same size and weight as the actual mirror, and was used to during the initial setup of the telescope mechanics.
