Overlay of the map of CO (6–5) emission observed by the APEX telescope (colour background) with the H₂ 0–0 S(5) emission (white contours), observed with the Spitzer telescope. The wedge unit is K km s^-1 (main beam temperature) and refers to the CO observations. The H₂ 0–0 S(5) contours are from 10% to 100%, in steps of 10%. The light blue contour defines the half-maximum contour of this transition. Like in Fig. 2, the blue circles and dots indicate the positions and beam sizes of the SOFIA/GREAT observations. The beam and pixel sizes of the CO (6–5) (11–10), (16–15), and H₂ 0–0 S(5) observations are the green circles in the upper left corner. The black contour delineates the half-maximum contour of the H₂ 0–0 S(2) transition. The field is the same as in Fig. 2, and the knot 5 and HH320 region are in pink. The field covered by Spitzer/IRS to observe the H₂ emission is indicated in dashed grey line. It excludes the SiO peak position.