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CHARA array

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Title: CHARA array  
Author: World Heritage Encyclopedia
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Subject: List of stellar angular diameters, Mount Wilson Observatory, Astronomical interferometer, Vega, Telescopes
Collection: Interferometric Telescopes, Telescopes
Publisher: World Heritage Encyclopedia

CHARA array

One of the six telescopes that are part of the astronomical interferometerLooking down on the top of Mount Wilson, including the historic 100
Two of the six light pipes that connect the array to the beam combining labThe Operations Center of the CHARA array at Mount Wilson Observatory

The CHARA array is an angular resolution telescope at near-infrared wavelengths. It is located at the Mount Wilson Observatory, near Los Angeles, California.

The CHARA array is an interferometer formed from six 1 meter telescopes arranged along three axes with a maximum separation length of 330 m. The light beams travel through vacuum tubes and are combined optically, requiring a building 100 meters long with movable mirrors to keep the light in phase as the earth rotates. CHARA began scientific use in 2002 and began "routine operations" in early 2004. In the infrared, the array has an interferometric imaging resolution of 0.0005 arcseconds. All six telescopes are in regular use for scientific observations and as of late 2005 imaging results are routinely acquired. The array captured the first image of the surface of a main sequence star other than the sun published in early 2007.[1]


  • See also 1
    • Featured objects 1.1
  • References 2
  • External links 3

See also

Featured objects


  1. ^ U-M astronomers capture the first image of surface features on a sun-like star, University of Michigan, 2007-05-31

External links

  • CHARA Research, the home page of CHARA at Georgia State University
  • First 4-Telescope Fringes at the CHARA Array
  • Vega Mystery Solved; Red Dwarf Mystery Grows, Sky and Telescope article about CHARA.
  • First Results from the CHARA Array. III. Oblateness, Rotational Velocity and Gravity Darkening of Alderamin
  • The Very Best Telescope, by William Speed Weed, Discover Magazine, October 2002. Included in The Best American Science and Nature Writing (2003).
  • The VEGA instrument on the CHARA Array.

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