SOFIA/HAWC+ intensity maps of OMC-3 at 154 (left) and 214 μm (right). Using the line-integral-convolution technique, the magnetic field direction is displayed. The isocontour lines mark 20, 40, 60, and 80% of the maximum intensity. According to criteria Eqs. (2) and (3), only vectors with I > 100 σ_I and p > 3 σ_p are considered (see Sect. 2). The beam sizes of 13.6″ at 154 μm and 18.2″ at 214 μm (defined by the FWHM) are indicated in the lower right.