Figure 1.
R-band optical image (field = 45 arcsec, north up, east left) obtained at the New Technology Telescope (NTT) for the BL Lac object S2 0109+22 (Falomo 1996). Five galaxies, labelled as G, are present in the field of view of the BL Lac object. The sources flagged as S are classified as star by SDSS.

R-band optical image (field = 45 arcsec, north up, east left) obtained at the New Technology Telescope (NTT) for the BL Lac object S2 0109+22 (Falomo 1996). Five galaxies, labelled as G, are present in the field of view of the BL Lac object. The sources flagged as S are classified as star by SDSS.

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