The Edinburgh-Cape Blue Object Survey - V. The end: Partial Zones 4-6; Galactic latitudes -50° > b > -90°

Results for the remaining zones of the Edinburgh-Cape (EC) Blue Object survey are presented. These are incomplete, but lie in that part of the South Galactic Cap between 50° and 90° from the Galactic plane and south of about -12.3° of declination. This part of the survey comprises 79 UK Schmidt Telescope fields covering about 2150 deg², in which we find 536 blue objects - including hot subdwarfs (∼33 per cent), white dwarfs (∼30 per cent), binaries (∼12 per cent), cataclysmic variables (∼1.5 per cent) and some `star-like' galaxies (∼12 per cent). A further 254 stars observed in the survey, mainly low-metallicity F- and G-type stars, are also listed. Low-dispersion spectroscopic classification is given for all the hot objects and UBV photometry for most of them. Either spectroscopy or photometry is listed for the cooler types.