NED object is NGC 6251; Reference is 981MNRAS.197..287S

   Figure 2. Maps of total intensity I of the jet. Main frame: 2.7 GHz, 3.7
 arcsec HPBW, contour interval 2 mJy per beam. Inset: 5 GHz, 2 arcsec HPBW,
 contour interval 1.5 mJy per beam. Zero contours are suppressed and negative
 contours are dashed. Both maps have had a point source removed from the
 position marked by a cross on the 2.7GHz map. Coordinates are for epoch
 1950.0.