| 词条 | Bok Telescope |
| 释义 |
The Bok Telescope (also known as the 90-inch) is the largest telescope operated solely by Steward Observatory. It finds much use from astronomers from University of Arizona, Arizona State University, and Northern Arizona University, with instruments capable of both imaging and spectroscopy.[1] The telescope operates year-round, except during the August summer-shutdown when maintenance is performed while the weather is poor (Arizona's monsoon season lasts from roughly July through August). HistoryThe Bok Telescope was named after the prolific astronomer and director of Steward Observatory from 1966–1969, Bart Bok, one of the most beloved astronomers in Tucson. It was used on March 18, 2007 by Bruno Sicardy to view Pluto's occultation of a star in Sagittarius.[2] The building itself features a very long spiral staircase leading to the telescope and a balcony called "The Bok Walk". InstrumentsThere are currently 3 instruments that are mainly used at the 90-inch, two that work in the optical and one in the near-IR. The 90prime instrument, whose principal investigator is Edward Olszewski, is a prime focus, wide-field imager capable of imaging 1 square degree on the sky, while the B&C Spectrograph does spectroscopy. The Steward 256x256 NIR Camera, which has been available at the telescope since 1991,[3] uses a NICMOS array which was built during the development of the NICMOS instrument on the HST. See also
References1. ^{{cite web |url=http://james.as.arizona.edu/~psmith/90inch/90inch.html |title=90-inch Website}} 2. ^{{cite web |url= http://uanews.org/node/13162|title= Arizona Telescopes Focus On Pluto Early March 18}} 3. ^{{cite web |url=http://ircamera.as.arizona.edu/~marcia/Cam_page/ |title=256x256 Page}} External links{{Commons category|Bok Telescope}}
4 : Astronomical observatories in Arizona|Buildings and structures in Pima County, Arizona|Optical telescopes|University of Arizona |
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