Star-Cluster Astrometry with Ground-Based Wide Field Imagers
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We show the astrometric potential of the Wide Field Imager at the focus of the MPI-ESO 2.2m Telescope. Currently, we are able to measure the position of a well-exposed star with a precision of $\sim$4 mas/frame in each coordinate (under 0.8 arcsec seeing conditions). We present some preliminary results here.
4 pages, 3 figures, from "Astrometry in the Age of the Next Generation of Large Telescopes", 18-20 October 2004, Flagstaff, ASP Conf. Ser. in press
4 pages, 3 figures, from "Astrometry in the Age of the Next Generation of Large Telescopes", 18-20 October 2004, Flagstaff, ASP Conf. Ser. in press