Goodsell Observatory

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Goodsell Observatory
Goodsell Observatory 1895.jpg
Goodsell Observatory, 1895
Organization Carleton College
Location Northfield, Minnesota, U.S.A.
Coordinates 44°27′42″N 93°09′08″W / 44.46167°N 93.15222°W / 44.46167; -93.15222
Altitude 290 meters
Weather See the Clear Sky Clock
Established 1886
John Brashear 16.5-inch aperture refractor
Alvan Clark

8.25-inch aperture refractor

Goodsell Observatory--Carleton College
Goodsell Observatory is located in Minnesota
Goodsell Observatory
Location Off 1st St., E., Northfield, Minnesota
Coordinates 44°27′43″N 93°9′9″W / 44.46194°N 93.15250°W / 44.46194; -93.15250Coordinates: 44°27′43″N 93°9′9″W / 44.46194°N 93.15250°W / 44.46194; -93.15250
Area less than one acre
Built 1887
Architectural style Romanesque
Governing body Private
NRHP Reference # 75001025[1]
Added to NRHP May 12, 1975
On June 2, 2010, Goodsell was dressed up as R2D2 by students.

Goodsell Observatory is a building on the campus of Carleton College in Northfield, Minnesota. It was constructed in 1887 and was, at the time, the largest observatory in the state of Minnesota. It was named for Charles Goodsell, who donated much of the land on which Carleton was founded. Goodsell was built to replace Carleton's original observatory (built in 1877), which was razed in 1905 to make room for Laird Hall. Goodsell Observatory is on the National Register of Historic Places.

The observatory's first central telescope, purchased in 1877, was an 814" refractor manufactured by Alvan Clark and Sons. In 1890, the college acquired a 16.2" refractor produced by the famous John Brashear of Pennsylvania. It was then the twelfth largest refractor in the world and sixth largest in the United States. In 1922, Carleton professor Edward Fath constructed one of the nation's first photoelectric photometers in Goodsell.

From the late 19th century to the end of the World War II, Goodsell kept the time for every major railroad west of the Mississippi, including Northern Pacific Railway, the Great Northern Railway, the Chicago, Milwaukee, and St. Paul Railroad, and the St. Paul, Minneapolis, and Manitoba railroads.

A US Signal Corps station was placed at the observatory in 1881 and transmitted meteorological data to Washington. Goodsell also served as the headquarters of a state weather service from 1883 to 1886.


  • The collection of meteorites on display in Goodsell was given to the college by the meteoriticist Harvey H. Nininger as payment-in-kind for his daughter's tuition in 1942.


  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09. 
  • Headley, Leal and Merrill Jarchow, Carleton: The First Century, (Northfield, 1966).
  • Leonard, Delavan, The History of Carleton College, (Chicago, 1904).

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