Observation of the BL Lac objects 1ES 1215+303 and 1ES 1218+304 with the
  MAGIC telescopes
  The two BL Lac objects 1ES 1215+303 and 1ES 1218+304, separated by 0.8 deg,
were observed with the MAGIC telescopes in 2010 and 2011. The 20 hours of data
registered in January 2011 resulted in the first detection at Very High Energy
(>100 GeV) of 1ES 1215+303 (also known as ON-325). This observation was
triggered by a high optical state of the source reported by the Tuorla blazar
monitoring program. Comparison with the 25 hours of data carried out from
January to May 2010 suggests that 1ES 1215+303 was flaring also in VHE
gamma-rays in 2011. In addition, the Swift ToO observations in X-rays showed
that the flux was almost doubled respect to previous observations (December
2009). Instead, 1ES 1218+304 is a well known VHE gamma-ray emitter lying in the
same field of view, which was then simultaneously observed with the MAGIC
telescopes. The overall observation time of nearly 45 hours has permitted to
measure the spectrum of this source with a much higher precision than
previously reported by MAGIC. Here, we present the results of the MAGIC and the
multi-wavelength observations of these two VHE gamma-ray emitting AGNs.
