Magnetic field morphology overplotted on the Planck-based N_H map of the NCPL. Left panel: dust emission polarization rotated by 90°, shown by red segments. The length of each segment is proportional to the polarized intensity. Magenta segments correspond to our polarization measurements; all segments have a fixed size for visualization purposes. There is an offset in the magnetic field orientation as traced by optical and submillimeter polarization due to the large beam difference between the two observables. Colored stars correspond to the target C+ LOSs, as shown in Fig. 2. Right panel: zoomed-in view of the region toward the target cloud. The solid cyan segment shows the H_α canal found by McCullough & Benjamin (2001).