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Michigan State University Observatory
	Michigan State University Observatory
Organization	Michigan State University
Observatory code	766
Location	East Lansing, Michigan, United States
Coordinates	42°42′23″N 84°28′56″W / 42.70639°N 84.48222°W
Altitude	264 m (866 ft)
Website	http://www.pa.msu.edu/astro/observ/
Telescopes
unnamed
unnamed	24-inch Cassegrainian reflector, f/3.0 primary, and f/8.0 focus, with 6-inch refractor guide scope
	Location of Michigan State University Observatory
	Related media on Commons
	[edit on Wikidata]

Michigan State University Observatory is an astronomical observatory owned and operated by Michigan State University. It is located south of the Michigan State University campus in East Lansing, Michigan (USA), near the corner of Forest Rd and College Rd. It has a Cassegrain telescope in its single dome. Built by Boller and Chivens, the Michigan State University telescope was commissioned in 1969 and entered regular operation in 1970. In 1974, what was at the time a state-of-the-art Raytheon Microcomputer was installed to function as a data gathering and control system.^[1] Originally, single channel photoelectric photometry and photography using plates or film were the means of acquiring data. The observatory was closed from 1981 until 1986, at a time when the university was having financial difficulties. It was reopened in the spring of 1986 on the occasion of the return of Comet Halley and has been in regular operation ever since. Since the 1980s, a CCD camera has been employed as the main instrument and the Raytheon computer has been retired. The International Astronomical Union has assigned the MSU Observatory identification code 766.^[2]

Prior observatory

This present campus observatory is not the first to have been built on the MSU campus. In 1880, Professor Rolla C. Carpenter built an observatory for the (then) State Agricultural College to house an Alvan Clark & Sons refracting telescope of 5.5 inches aperture. The observatory was located behind his residence at Faculty Row No.2, near where Sarah Langdon Williams Hall stands today.^[3] The original telescope is on exhibit at the Abrams Planetarium.^[1]

Public viewing

Approximately one pair of evenings per month, if the sky is sufficiently clear, the MSU observatory opens its doors for public observing. The MSU 0.6 meter telescope will be set up for viewing on selected astronomical objects throughout the evening. Also, smaller telescopes are set up in the observatory parking lot, with both local area and MSU astronomers on hand to answer questions.

References

^ ^a ^b Smith, Horace (July 2009). "A Brief History of the Michigan State University Campus Observatory". Archived from the original on 28 October 2009. Retrieved 3 December 2009.
^ "IAU Observatory Code". Harvard University. Retrieved 3 December 2009.
^ Forsyth, Kevin S (2003). "M.A.C. – Observatory". A Brief History of East Lansing, Michigan. Retrieved 8 October 2007.