Battling within the constellation of Ara (the altar of the Gods), the Dueling Dragons are massive clouds of ionized gas and dust which span over 600 light years across. Energy from the open star cluster NGC 6193 ionizes the nearby clouds of hydrogen, oxygen and sulphur making them glow in bright colors.
Ten hours of exposures were combined for this image, shot with my rooftop telescope using narrowband filters which allow very specific wavelenghts of light emmited by the nebula to pass, blocking light pollution and enabling this kind of deep space photography from the highly polluted urban skies of Buenos Aires.