Three-dimensional reconstruction of the bundle of loop threads (red dots) observed with the AIA 171 Å (top panels), and the hot loop (yellow dots) observed with the AIA 94 Å (middle panels). The loops are best-fitted by semi-ellipses (solid green line) with an inclination angle of −60 deg with respect to the normal surface, and heights of 0.85 r_L in the 171 Å, and 0.70 r_L in the 94 Å channels. The projections of the loop system for different orientations of the HEEQ coordinate system are shown in the bottom panels.