Measurement of the red-shifted jet width and opening angle. Lower panels: intrinsic jet FWHM (plotted in green) measured along the red-shifted micro-jet, with the source position at the origin. Deprojected distance from the source is given on the x-axis. The opening angle in each case is estimated by a linear fit to the lower bounds of the FWHM measurements, corresponding approximately to observed knot positions (marked with blue points). Upper panels: the corresponding deconvolved channel maps; contours begin at 3σ of the background noise and increase as a factor of .