NED object is NGC 5077; Reference is  1984ApJ...287...41W

   Fig. 17.- NGC 5077 at 4.9 GHz. The peak total intensity is 85.0 mJy beam
 **(-1), the CI is 0.7 mJy beam **(-1), and contours at -3, -2, -1, 1, 2, 3, 4,
 5, 10, 20, 40, and 80 times this CI are plotted. The map was corrected for
 primary-beam attenuation. The cross has the same meaning as in Fig. 16. At the
 location of the cross the inverse primary-beam correction is about 1.32.