Photopolarimetrical Study of Blazar-type AGN OJ287 in 2012-2015 with the
  2m RCC Telescope at NAO Rozhen
  We present the results of a photopolarimetric study of the blazar OJ287 in
the period November 2012-January 2015. Observations were conducted using the
Focal Reductor FoReRo-2 of the 2-meter RCC telescope of the National
Astronomical Observatory (NAO) Rozhen. The observed change of the position
angle (P.A.) corresponds to mean rotation of the plane of polarization of 6.23
deg/day, in good agreement with previous measurements. An indication of a
correlation between the change of brightness in R-band and the change in the
degree of polarization is also observed.
