Chandra/ACIS image of HD 163296 and its jet HH 409 in the energy range 0.2–5.0 keV binned up by a factor of two (Each block is 2 pixel ≈1′′ on the side). The black box shows the position of the optical jet. The half-width of the box is comparable to the PSF (1′′). The long axis of the box passes through the centroid of the X-ray emission and has the position angle 42°. Circles indicate locations of possible emission knots. The radii are 2.5′′. (This figure is available in color in electronic form.)