Image of the reprocessed 1.4-GHz data taken by WU97 of RCW 49 (see Sect. 2.3). The position of Westerlund 2 is marked by the circle. The two very bright stars WR 20a (member of Westerlund 2) and WR 20b are indicated by the two crosses. The bridge is clearly seen as the bright bar of emission in the center of the image to the southeast of Westerlund 2. Farther to the southeast is WR20b, surrounded by a circle of emission, the southern ring as identified by WU97. There is a suggestion of the northern ring around Westerlund 2, but it is not as clear as the one to the south, mainly because the western side is absent as a result of the “blister” suggested by WU97.