Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..ses..ab01m&link_type=abstract
American Physical Society, 66th Annual Meeting of the Southeastern Section of the American Physical Society November 7-9, 1999 C
Astronomy and Astrophysics
Astrophysics
Scientific paper
The Center for High Angular Resolution Astronomy (CHARA) of Georgia State University is building a six-telescope optical/infrared interferometric array on the grounds of the Mt. Wilson Observatory. The telescopes of the "CHARA Array" have apertures of 1 meter and are dispersed in a Y-shaped configuration with maximum baseline of 350 meters. This yields limiting resolutions of 200 microarcseconds in the visible and 1 milliarcsecond in the K-band infrared. The Array will be applied to a wide variety of problems in stellar astrophysics including the determination of stellar radii, masses, distances, luminosities, and temperatures. Direct measurement of the expansion of novae outburts and the pulsations of Cepheid variables for distance calibration will be undertaken. Imaging of surface and circumstellar features is also a major scientific goal. Construction of the project will be completed in late 1999, and the facility will be operational in early 2001. The CHARA Array is funded by Georgia State University, the National Science Foundation, the W.M. Keck Foundation, and the David and Lucile Packard Foundation.
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