Zoom-in of the central region of G24.78+0.08, where the cluster of A1−A2 continuum sources (grey scale) has been mapped at high angular resolution by Beltrán et al. (2011) using a very extended SMA configuration (). The spatial distribution of the blue-shifted (from +106 to +110 km s^-1) absorption (see Fig. 4) observed towards A1 is reported by the green contours. Contour levels range from –10σ to –3σ by steps of 1σ (0.3 mJy beam^-1 km s^-1). The filled ellipse in the bottom-right corner shows the synthesised beam (HPBW): (PA = –15°).