Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-05-19
Astronomy and Astrophysics
Astrophysics
7 pages, 5 figures. Accepted by MNRAS. Photometry data tables available at http://icstar5.ph.ic.ac.uk/~scroom/phot/photom.html
Scientific paper
10.1046/j.1365-8711.1999.02560.x
We present results from a continuing campaign to secure deep multi-colour CCD sequences for photometric calibration in UK Schmidt fields with galactic latitudes |b|>50deg. In this paper we present UBVR photometry in 12 fields and BR photometry in a further 14 fields observed within UK Schmidt survey fields centred at declination=-30deg. Photometric errors are at the 0.05 level at 20.2, 21, 20.5 and 20 mag for UBVR sequences respectively. Our observations were carried out with the 0.9m Telescope at the Cerro-Tololo Inter-American Observatory. These data are not intended for use as highly accurate individual photometric standards, but rather for use as sequences, using a large number of stars to calibrate wide-area data such as photographic plates. The data are available electronically at http://icstar5.ph.ic.ac.uk/~scroom/phot/photom.html
Boyle Brian J.
Croom Scott M.
Parker Quentin A.
Ratcliffe Andrew
Shanks Tom
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