Three College Observatory was created in 1979.
Vassar College Observatory was created in 1865.
Five College Radio Astronomy Observatory was created in 1969.
Morris Observatory was created in 1973.
Macfarlane Observatory was created in 1757.
Moore Observatory was created in 1978.
Behlen Observatory was created in 1972.
Jura Observatory was created in 1993.
Detroit Observatory was created in 1854.
Sphinx Observatory was created in 1937.
Armagh Observatory was created in 1789.
RIT Observatory was created in 1992.
Kevola Observatory was created in 1963.