L1688 core in Ophiuchus and the region around IRS 63 (inset upper left corner). The background shows the 850 μm SCUBA map (Johnstone et al. 2000; Di Francesco et al. 2008). The locations of all observed HARP maps are indicated by squares, labeled by the sources within. The blue and red arrows indicate the direction and observed extent of the blue and red outflow of that source, except for the extent of VLA 1623, which was taken from Yu & Chernin (1997) who observed the region centered on VLA 1623. In crowded regions, lines connect the source names to the origin location of the outflow. Newly detected outflow structures without a driving source are marked with Us.