Typical spectra observed in the SN1, SN2, and SN3 filters (top to bottom) of the SITELLE data. The whole spectral range is shown for the SN2 and SN3 filters while only a 1.25 nm range is shown for the SN1 filter to focus on the [O II] doublet and its multiple radial velocity components. For the SN1 filter, the reference wavelengths of the [O II] doublet are indicated by dotted lines. The spectra were obtained using apertures of 2.5′′ in diameter for SN1 and 13′′ in diameter for SN2 and SN3, at the locations of HH-216, a blueshifted clump (see Sect. 3.3), and at the tip of Pillar 2.