NED object is NGC 4536; Reference is 1985A&AS...60..293H Fig. 1h. NGC4536 Contours plotted (mJy per beam) -1, -0.5, 0.5, 1, 2, 4, 8, 16, 32, 64 -- HPBW (arcsec) 15 x 12 (-21deg) -- r.m.s. noise (mJy per beam) 0.35 -- kpc per arcmin 5.8.