Small FoV observed with NIRSpec and MIRI-MRS. The green cross shows a C₂H N = 4–3 emission peak in DF3 region. This peak nearly coincides with the IR H₂ emission peak. “cgs” refers to erg s⁻¹ cm⁻² sr⁻¹. The (C₂H/R)_Norm map refers to the normalized C₂H N = 4–3 line intensity divided by the normalized 3.4/3.3 μm AIB ratio. Figure 7 shows vertically averaged intensity cuts of this field.