NED object is NGC 6454; Reference is 1996ApJS..107...37T

   ,Fig. 4.-VLA images of sources resolved at 6 and/or 20 cm. FWHM contour of
 the Gaussian beam is drawn in the lower left corner and is listed in Table 2,
 along with the rms and peak flux density. Contours are drawn logarithmically
 at -3 {sigma}, 3 {sigma}, 6 {sigma},12 {sigma}, etc., with negative contours
 shown as dashed lines. A linear scale bar is drawn for each source as
 described in Fig. 3.