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75th anniversary: The Hale Telescope at Palomar Observatory in California, the largest aperture...

Fri, January 26, 2024

3 yr ago

Source

In 1949, The Hale Telescope at Palomar Observatory in California, the largest aperture optical telescope in the world for 28 years, saw first light.

Also on Jan 26, 2024

Source, method and history
Source
Wikipedia
How we know
Wikipedia "On this day" selected anniversary, 75 years (1949 to 2024).
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