The CCD sequences have been observed in March 1995 with the 1.0 m telescope
at the
South African Astronomical Observatory (SAAO) in Sutherland, South Africa.
The CCD camera contains a Tek chip of 512 
512 pixels. The pixel size is
which corresponds to a scale of 0.35 arcsec/pixel and to
an image size of 
. The filters available are
Johnson B and V and Cousins R.
The CCD observations were made during five photometric nights. The seeing
varied between 
and 
FWHM.
In order to observe as many galaxies as possible, all sequences were taken
in dense areas of clusters of galaxies chosen from Abell et al. (1989).
For each ESO/SERC field (except field No. 576), two CCD fields were observed.
For each CCD field B, V and R frames were taken. The exposure times
were 1800 s in B and 900 s in V and R, respectively.
The CCD magnitudes are calibrated with the magnitudes of 18 E-region stars given by Menzies et al. (1980). The magnitude and colour ranges of the chosen stars were 8.13 < V < 10.65 and -0.02 < B-V < 1.53, respectively. The standard stars were observed several times during a night at different airmasses with exposure times between 3 s and 12 s per frame. With these data, the coefficients for transforming the instrumental CCD system into the standard magnitude system were determined.