An extended galaxy redshift survey - I. The catalogue.

We present redshifts and blue magnitudes for a sample of 264 `field' galaxies virtually complete to a limiting magnitude of b_j_~16.80 mag. The galaxies were selected by sampling one galaxy in every three in order of apparent magnitude on each of nine high-latitude UK Schrmidt (UKST) fields. Photometric data were provided by COSMOS machine measures of UKST plates, zero-pointed with CCD photometry. The spectra data came from observations with the 1.9-m telescope at the south African Astronomical Observatory (SAAO), and the resulting radial velocities have a precision of ~ +/- 130 km s^-1^. This survey augments substantially the Durham/AAT redshift survey. In this paper we discuss the observational techniques and reduction procedures.