NED object is NGC 4527; Reference is 1985A&AS...60..293H Fig. 1h. NGC4527 Contours plotted (mJy per beam) -0.5, 0.5, 1, 2, 4, 8, 10, 15, 20, 25, 30, 40, 50 -- HPBW (arcsec) 15 -- r.m.s. noise (mJy per beam) 0.20 -- kpc per arcmin 5.8.