Environment of PSR J0248+6021 from red Palomar Optical Sky Survey photographic plates (POSS-II, background) and NRAO VLA Sky Survey (NVSS) 1.4 GHz charts (contours). The solid arrows show the proper-motion position angle and uncertainty. The dashed arrows show the polarization position angle at the inflection point and uncertainty, extrapolated to infinite frequency. The arrow lengths have no meaning. The zoomed image at right shows the star near the pulsar excluded as an optical counterpart, as well as the optical arc emanating from the star discussed in the text.