Magnetic field model of the prominence compared to SDO/AIA observations. Top left: original magnetic field model of the prominence with symmetric unsheared bipole (Dudík et al. 2012, Fig. 6 therein). Magnetic dips up to a height of 300 km are shown in red. Spine and fan field lines of the positive and negative magnetic null-points are shown in yellow and blue. Arrow points to the large bubble within the prominence created by the bipole. Top middle: the same model, projected off-limb at 30° of solar latitude. The small bubble within the right foot is denoted by the arrow. Top right: asymmetric model in the same off-limb projection. Dimensions are given in units of 1000 km. Bottom row: SDO/AIA 304 channel observations of the prominence together with the on-disk filament (right), while a weak filament channel is visible in SDO/AIA 193 channel (left).