Stokes I, Q, and U maps (from left to right) of WR 147 and HD 167971. From top to bottom: WR 147 in the L and C bands, followed by HD 167971 in the L and C bands. The Stokes I maps are shown with a logarithmic color scale. Q and U maps are displayed in a linear autoscale. In all panels, cyan contours at 5 and 9σ indicate the target position, while white dashed contours show emission at −3σ. The synthesized beam is displayed in green in the bottom-left corner.