Optical Spectral Variability of the Very-High-Energy Gamma-Ray Blazar 1ES 1011+496

M. Boettcher, B. Hivick, J. Dashti +10

We present results of five years of optical (UBVRI) observations of the very-high-energy gamma-ray blazar 1ES 1011+496 at the MDM Observatory. We calibrated UBVRI magnitudes of fiv…