A Technique for Ultrahigh-Precision CCD Photometry

Details A Technique for Ultrahigh-Precision CCD Photometry A Technique for Ultrahigh-Precision CCD Photometry

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pasp..113.1428e&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 113, Issue 789, pp. 1428-1435.

Astronomy and Astrophysics

Astronomy

53

Stars: Variables: General, Techniques: Photometric

Scientific paper

We present techniques for wide-field ultrahigh-precision time-sampled CCD photometry. Representing a survey of field stars, our data consist of UBVRI photometry and a V-band time series of exposures on 5 consecutive nights covering 11,500 stars in a ~1 deg2 field. The resulting light curves reach precisions of 0.0020 mag per exposure in the brightest stars (V~14). Light curves binned and averaged over 4.5 hr reach precisions of 0.00019 mag for the brightest stars. We present example light curves and discuss one application for surveys of this type: the search for transits by extrasolar planets.

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