  Observations have been made, using the University of Durham Mark 6 gamma ray
telescope, of the very high energy gamma ray emission from a number of active
galactic nuclei visible from the Southern hemisphere. Limits are presented to
the VHE gamma ray emission from 1ES 0323+022, PKS 0829+046, 1ES 1101--232, Cen
A, PKS 1514-24, RXJ 10578-275, and 1ES 2316-423, both for steady long-term
emission and for outbursts of emission on timescales of 1 day.

Astrophysics