Hartung–Boothroyd Observatory

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The Hartung–Boothroyd Observatory (HBO) is located atop Mount Pleasant near Cornell University outside of Ithaca, New York (US).^[1] It is used mainly as a teaching facility for upper-level undergraduate astronomy classes. The observatory is named to recognize funding from M. John Hartung, a 1908 Cornell graduate and later chemical industrialist, and to honor Samuel L. Boothroyd, the founder of Cornell's Department of Astronomy. The facility was designed and directed from 1974 to 2012 by James R. Houck.

Key Information

Organization	Cornell University
Observatory code	H81
Location	553 Mount Pleasant Rd Dryden, New York (United States)
Coordinates	42°27′29.61″N 76°23′4.59″W / 42.4582250°N 76.3846083°W / 42.4582250; -76.3846083
Altitude	530 m
Established	1974
Website	hbo.sirtf.com
Telescopes
James R. Houck Telescope 60 cm (25") Fork-mounted Cassegrain reflector
James R. Houck Telescope	60 cm (25") Fork-mounted Cassegrain reflector
Location of Hartung–Boothroyd Observatory
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The primary 0.6m mirror was constructed from a Pyrex 1/8-scale test pouring as part of technology development for the Palomar Observatory 200-inch telescope. The mirror was polished and mounted in a lightweight tube in the late 1930s under Boothroyd's direction, but World War II deferred its planned use in a high-altitude observatory. This facility, together with an equatorial fork mount to hold the previously completed telescope, was completed in 1974.^[2]

• Clinton B. Ford Observatory, Ithaca College
• Fuertes Observatory, Cornell University
• Kopernik Space Education Center

• List of observatories

• Hartung-Boothroyd Observatory

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