Map of integrated (between 5 and 13 km s⁻¹) HF J = 1 → 0 intensity overlaid with [O I] 6300 Å, which traces the ionization front of the Orion Bar and is shown with black contours, and the H¹³ CN dense gas tracer, shown in blue contours. The positions where the three spectra in Fig. 3 were extracted are indicated by numbers 1 through 3. The black circle shows the (18.1′′) FWHM HIFI beam and the pixel size in this map is 4.5′′. SMA8 denotes a dust condensation (Qiu et al. 2018). The light green star denotes the HF peak. The black star shows the CO⁺ peak.