Medium-band photometric reverberation mapping of AGNs at $0.1 < z <
  0.8$. Techniques and sample
  The most popular method of the broad-line region size estimation in active
galactic nuclei (AGN) is the reverberation mapping based on measuring the time
delay between the continuum flux and the flux in the emission lines. In our
work, we apply the method of photometric reverberation mapping in mid-band
filters, adapted for observations on the 1-m Zeiss-1000 telescope of Special
Astrophysical Observatory of Russian Academy of Sciences, for the study of AGN
with broad lines in the range of redshifts $0.1 < z < 0.8$. This paper provides
a sample of 8 objects, describes the technique of observations and data
processing for 2 studied objects to demonstrate the stability of the used
method.
