MDM Observatory

MDM Observatory
MDM Hiltner 2.4 m Telescope
Organization Columbia University
Dartmouth College
Ohio State University
Ohio University
University of Michigan Edit this on Wikidata
Observatory code 697 Edit this on Wikidata
Location Kitt Peak, Arizona, US
Coordinates 31°57′06″N 111°36′58″W / 31.9517°N 111.616°W / 31.9517; -111.616Coordinates: 31°57′06″N 111°36′58″W / 31.9517°N 111.616°W / 31.9517; -111.616
Telescopes Hiltner 2.4m Telescope
McGraw-Hill Telescope Edit this on Wikidata
Location of MDM Observatory
Related media on Wikimedia Commons

The MDM Observatory (Michigan-Dartmouth-MIT Observatory; obs.code: 697) is an optical astronomical observatory located adjacent to Kitt Peak National Observatory on Kitt Peak, west of Tucson, Arizona, in the United States. It is owned and operated by the University of Michigan, Dartmouth College, Ohio State University, Columbia University, and Ohio University. The Massachusetts Institute of Technology (MIT) was also part of the operating consortium in the past.

It has two reflecting telescopes, the 2.4-meter Hiltner Telescope (since 1986), used for galactic surveys, and the 1.3-meter McGraw–Hill Telescope (since 1975), which was originally located near Ann Arbor, Michigan.[1]

Hiltner Telescope

The mirror of the 2.4-meter Hiltner Telescope is aluminum-coated Cer-Vit, and usable foci include f/7.5 and f/13.5 Cassegrain foci. [2] The telescope was built in 1986 and the mirrors were re-polished in 1991.[3] It was named after astronomer W. Albert Hiltner (1914-1991).[4]

McGraw–Hill Telescope

MDM McGraw-Hill 1.3 m Telescope

The 1.3-meter McGraw-Hill Telescope, with an 1.27-meter clear aperture, is an aluminum-coated Cer-Vit (low thermal expansion glass) telescope. Its usable foci include f/7.5 and f/13.5.[5] The telescope was originally installed at Stinchfield Woods, Michigan in 1969, and moved in 1975 to MDM.[1]

Asteroid 4432 McGraw-Hill

The asteroid 4432 McGraw-Hill is named after this telescope. It was discovered on March 2, 1981 by Schelte J. Bus at Siding Spring in the course of the UK Schmidt-Caltech Asteroid Survey. On February 18, 1992, the International Astronomical Union officially assigned the name "McGraw-Hill" to the asteroid. The text of the citation, as officially published by IAU Commission 20 (M.P.C. 19697),[6] is as follows:[7]

References

  1. 1 2 MH Telescope Specifications
  2. "Archived copy". Archived from the original on 2010-06-07. Retrieved 2010-11-14.
  3. "Archived copy". Archived from the original on 2011-07-16. Retrieved 2010-11-14.
  4. "Archived copy". Archived from the original on 2010-06-07. Retrieved 2010-03-14.
  5. "Archived copy". Archived from the original on 2012-03-12. Retrieved 2012-03-05.
  6. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 May 2018.
  7. "4432 McGraw-Hill (1981 ER22)". Minor Planet Center. Retrieved 27 May 2018.
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