Portage Lake Observatory

Portage Lake Observatory

Organization	University of Michigan
Location	Dexter, Michigan
Coordinates	42°24′13″N 83°55′28″W / 42.4035°N 83.9245°W / 42.4035; -83.9245Coordinates: 42°24′13″N 83°55′28″W / 42.4035°N 83.9245°W / 42.4035; -83.9245
Altitude	313 meters (1,027 ft)
Established	1948 (1948)
Closed	1975 (1975)
Telescopes
52-inch Telescope 1.3 m reflector H. D. Curtis Telescope 0.9 m reflector
Location of Portage Lake Observatory
[]

The Portage Lake Observatory (PLO) was an astronomical observatory owned and operated by the University of Michigan (UM). It was located near the village of Dexter, Michigan (USA), about 20 kilometers (12 mi) northwest of Ann Arbor. Construction at the site began in 1948, and the facility was closed in 1975.

Other observatories that UM has operated include the Detroit Observatory (Ann Arbor, Michigan, 1854), the Angell Hall Observatory (Ann Arbor, Michigan, 1927), the Lamont-Hussey Observatory (South Africa, 1928), the McMath-Hulbert Observatory (Lake Angelus, Michigan, 1930), and the Peach Mountain Observatory (Dexter, Michigan, 1955).