Integrated intensity (left) and velocity (right) maps for the HO 3_1,3 − 2_2,0 line in IRAS2A (from 4.4 to 11.4 km s^-1) and IRAS4A (from 4.7 to 9.6 km s^-1). Contours show integrated intensity and are in steps of 4σ for the intensity map, 8σ for the velocity map, and start at 3σ. The position of the continuum emission is marked by a red plus sign, an outflow by the solid line and maser emission by the dashed line. Positions where spectra have been extracted in IRAS2A along the outflow are marked with letters a and b and crosses with magenta and green colors in the integrated intensity map.