Same as Fig. 1 but for the 1994 post-COSTAR HST/FOC observation of LK-Hα-233. The top panel shows the high-resolution map, with inserts indicating where [S/N]_P ≥ 3 polarization vectors are detected. The white dot corresponds to a reseau mark that was masked during the reduction process. The bottom panel shows the medium-resolution map. Due to slightly incorrect pointing, the source appears in the bottom-left corner of the FOC field of view and is partially cut off. The improved image sharpness resulting from the COSTAR corrective optics package is clearly visible.