MEASUREMENT OF THE ATMOSPHERIC COHERENCE TIME

Authors
Citation
J. Davis et Wj. Tango, MEASUREMENT OF THE ATMOSPHERIC COHERENCE TIME, Publications of the Astronomical Society of the Pacific, 108(723), 1996, pp. 456-458
Citations number
8
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of the Pacific
ISSN journal
00046280 → ACNP
Volume
108
Issue
723
Year of publication
1996
Pages
456 - 458
Database
ISI
SICI code
0004-6280(1996)108:723<456:MOTACT>2.0.ZU;2-T
Abstract
Measurements of fringe visibility made with a stellar interferometer a re significantly affected by wave-front distortions caused by turbulen ce in the Earth's atmosphere. In this paper the temporal coherence of the wave-front distortion and the effect of the observational sampling time on fringe visibility measurements are discussed. A method for me asuring the atmospheric coherence time, which is now in routine use in the Sydney University Stellar Interferometer (SUSI), is described and some observational results are presented.