Survey of the optical variability of compact extragalactic objects. III - Objects from 23 H to 11 H

This paper reports observations made at Asiago Observatory up to 1977 of the optical variability of 34 quasi-stellar objects located from 23 to 11 hours right ascension. For 14 of them, observed on at least 12 plates, there is no sign of variations larger than 0.3 mag; their redshifts are uniformly distributed from 0.3 to 2.1.