  HQM is an optical broad-band photometric monitoring program carried out since
September 1988. We use a CCD camera at the MPIA 1.2$\,$m telescope. Fully
automatic photometric reduction relative to stars in the frames is done within
a few minutes after each exposure, thus interesting brightness changes can be
followed in detail. The typical photometric error is 1--2\,\% for a 17.5\,mag
quasar. We here present lightcurves of 14 known violently variable sources and
compare them with literature data. For two BL\,Lac objects, 1E\,1229+645 and
4C\,56.27 (1823+568), this paper is the first variability study. We have also
carried out POSS photometry to obtain indications for variability on a longer
timescale.
