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The Australia Telescope National Facility Colloquium
11:00-12:00 Wed 21 Nov 2007

ATNF Marsfield Lecture Theatre

Theo ten Brummelaar

(CHARA array)

Recent progress and science at the CHARA Array - Theo ten Brummelaar


PLEASE NOTE 11am START TIME
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Georgia State University’s Center for High Angular Resolution Astronomy (CHARA) operates an optical/near-IR interferometric array on Mount Wilson, California. The CHARA Array consists of six 1-m aperture telescopes arranged pair wise in a Y-shaped configuration yielding 15 baselines from 33 to 331 meters. These include several of the longest O/IR interferometric baselines yet implemented and permit limiting resolutions for stellar diameter measurements, conservatively defined in terms of reaching the first null in visibility, of 1.6 and 0.4 mas (milli-arcseconds) in the K and V bands respectively. For binary star studies, these limits are 0.8 and 0.2 mas. I will briefly describe the current status of the Array itself, including anticipated improvements over the near term, as well as describe some of the recent scientific results.

More information

Contact

Ilana Feain
Ilana.Feain@csiro.au

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