NED object is NGC 4649; Reference is 1986MNRAS.220..363S Figure 2. A contour map of the Einstein HRI image of NGC 4649 after smoothing with an 8 arcsec 2-D Gaussian function. The lowest contour level represents a surface brightness of 1.0 x 10**(-6) cts**(-1) arcsec**(-2) which is 3{sigma} above background and 8 per cent of the peak surface brightness. All other levels increment by 10 per cent of the peak value.