  The MAGIC telescope observed the region around the distant blazar 3C 66A for
54.2 h in 2007 August-December. The observations resulted in the discovery of a
gamma-ray source at energies above 150 GeV centered at celestial coordinates
RA=2h23m12s and DEC=43deg0.7' (MAGIC J0223+430), coinciding with the nearby
radio galaxy 3C 66B. A possible association of the excess with the blazar 3C
66A is discussed. The energy spectrum of MAGIC J0223+430 follows a power law
with a normalization of (1.7+-0.3_(stat)+-0.6_(syst)) 10^(-11)
TeV^(-1)cm^(-2)s^(-1) at 300 GeV and a photon index
Gamma=-3.10+-0.31_(stat)+-0.2_(syst). No significant variability of the signal
was found during the observation period.
