Spitzer/MIPS 24-μm image of the central part of Orion B9 overlaid with contours showing the LABOCA 870-μm dust continuum emission. The contours go from 0.1 (~3.3σ) to 1.0 Jy beam^-1 in steps of 0.1 Jy beam^-1. The 24-μm image is shown with a logarithmic scaling to improve the contrast between bright and faint features. The colour bar indicates the 24-μm intensity scale in units of MJy sr^-1. The green plus signs show the target positions of our molecular-line observations (i.e., the submm peak positions of the LABOCA map before adjusting the pointing; see text). The green line shows the base and northwest tip of the HH 92 jet driven by IRAS 05399-0121 (Bally et al. 2002). The 0.2-pc scale bar and the effective LABOCA beam HPBW (~20″) are shown in the bottom left (Paper I).