FestkolloquiumMeisenheimer Background Image: Active Galaxy Centaurus A (NGC 5128), taken with the Wide Field Imager at the ESO/MPG-2.2m-Telescope at La Silla (Chile), Credit: ESO Background Image: Active Galaxy Centaurus A (NGC 5128), taken with the Wide Field Imager at the ESO/MPG-2.2m-Telescope at La Silla (Chile), Credit: ESO