NED object is NGC 7456; Reference is 1987ApJS...65..543C Fig. 1. - Contour maps, in order of increasing right ascension. The optical value of the galaxy is indicated by a cross. Contour levels are plotted at +-2**(n/2), +-2**((n+1)/2), +-2**((n+2)/2),... mJy per restoring beam solid angle. The value of n for each galaxy is listed in Table 2.