Tucson in Pima County, Arizona — The American Mountains (Southwest)
The Vacuum Telescope
The focussed image of the sun is about 33 cm in diameter. By running most of the optical path in a vacuum The distortions of the image quality by air are avoided. The final image shows details on the Sun smaller than the state of Arizona. The position of the solar image is controlled by a secondary set of lenses and mirrors which provide a smaller image to a guiding mechanism.
Beneath ground level, a large spectrograph spreads the sunlight into its various composite wavelengths or colors. The spectrograph feeds this light to instruments which measure the magnetic field strength and velocity of the visible surface of the Sun. Such measurements
Location. 31° 57.49′ N, 111° 35.715′ W. Marker is in Tucson, Arizona, in Pima County. Marker can be reached from Arizona Route 386 12 miles south of W. Tucson-Ajo Hwy. (Arizona Route 86), on the left when traveling south. Touch for map. Located at Kitt Peak National Observatory in the Tohono O'odham Nation Reservation. Marker is in this post office area: Sells AZ 85634, United States of America.
Other nearby markers. At least 4 other markers are within walking distance of this marker. The McMath Solar Telescope (approx. 0.2 miles away); Kitt Peak National Observatory (approx. 0.2 miles away); The WIYN Observatory (approx. ¼ mile away); Steward Observatory (approx. 0.4 miles away).
Regarding The Vacuum Telescope. The Vacuum Telescope was built in 1973 and retired in 2002. It was made obsolete by newer instruments which operate a over a wider set of wavelengths. The building still exists.
Also see . . . Kitt Peak National Observatory. (Submitted on April 18, 2017, by Michael Herrick of Southbury, Connecticut.)
Categories. • Air & Space • Science & Medicine •
Credits. This page was last revised on April 30, 2017. This page originally submitted on April 18, 2017, by Michael Herrick of Southbury, Connecticut. This page has been viewed 124 times since then. Photos: 1, 2, 3. submitted on April 18, 2017, by Michael Herrick of Southbury, Connecticut.