Stereographic projections showing the Orion-Taurus ridge. Left: brightness temperature (T_b) at 74 MHz observed by the LWA telescope at 2° FWHM resolution. The contours are at 2100, 2200, 2400, 2600, and 2800 K, respectively. Center: polarized intensity (PI) at 30 GHz observed by the Planck satellite at the same FWHM resolution of T_b(74 MHz) with the plane-of-the-sky magnetic field orientation traced by line integral convolution (Cabral & Leedom 1993). Black contours are the same as in the left panel. Right: Hα emission map from Finkbeiner (2003) showing the Orion-Taurus ridge in contours and the extent of the Orion-Eridanus superbubble (OES) traced in blue as in Soler et al. (2018). The same Galactic coordinate grid is shown in all panels with steps in l and b of 10° and centered in (l, b) = (200° , − 30°). The stereographic projection was produced with the Python routine stereo_proj_hpx that can be found http://github.com/abracco/cosmicodes/blob/master/4GMIMS/Planckroutines.py.