Left: LUCI image of the H₂ line emission (continuum subtracted) tracing the jets in IRAS 05137+3919. The artefact due to continuum subtraction at the position of stars A1, A2, and B has been blanked (white area). The contours are a map of the continuum emission measured in the K_s filter. The contour levels have been chosen to show only the brightest stars in the field. The red long-dash and blue short-dash lines indicate, respectively, the borders of Jet 1 and Jet 2. Middle: same as left panel, for a smaller region centred on the jets’ origin. Right: same as left panel, for a comparison between the H₂ line and K_s continuum images taken with LUCI (top) and PISCES (bottom). The red points and corresponding arrows denote the H₂O maser spots and associated relative proper motions measured by Honma et al. (2011).