The Cincinnati Observatory

telescope
16" Alvan Clark Telescope

The Cincinnati Observatory is known as the “Birthplace of American Astronomy.” The 12″ Merz and Mahler Telescope was the second largest telescope in the world when it became operational in 1845, it is still in use today. The Cincinnati Observatory was the United State’s first public observatory with the original building’s cornerstone being set by President John Quincy Adams in 1843.