Sketch of the RN A outflow. The H₂ outflow cavity is drawn with a thick solid line in RN A and the outflow central source is marked with a star. The short arcs marked S 1 and S 2 display the positions of the Hα bowshocks. The dashed lines have been drawn from the outflow source through the Hα knots, which are marked with “x” to indicate the direction of the possible outflow. The short lines on the shell display the section that is bright in the IRAC bands.