Continuum-subtracted [O I]₆₃ maps of HH111 and SVS13. Light green stars indicate the position of the jet driving sources HH111IRS and SVS13 (coordinates from Table 1). The blue circle shows the FWHM spatial beam size in the blue channel of the FIFI- LS instrument. The golden boxes are the boundaries of the rectangular apertures, in which the fluxes F_63μm and F_145μm are measured (Table 4). Top panel: blue lines at the top label the right ascension of the knots F–P associated with the optical jet (Reipurth 1989). Contour lines are drawn in magenta in logarithmic scale at four levels between (0.0420–0.3200) × 10⁻¹³ erg s⁻¹ cm⁻². Bottom panel: blue crosses label the positions of HH 7-11 associated with the jet (coordinates taken from Bally et al. 1996). Contour lines are drawn in magenta in logarithmic scale at three levels between (0.068– 0.400) ×10⁻¹³ erg s⁻¹ cm⁻².