Faint UBVRI CCD sequences for wide-field surveys – I

Abstract
We present the first results of a campaign to secure deep UBVRI CCD photometric calibration in all UK Schmidt equatorial fields with galactic latitudes |b| > 50°. In this paper we provide information on deep BVRI sequences (B < 22 mag) in 14 UK Schmidt survey fields centred at declination = 0°. Deep U sequences have been obtained for 11 of these fields.
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