An image of the giant lobes of the planetary nebula KjPn 8 in the light of the emission lines of hydrogen and singly ionized nitrogen, obtained with the narrowband camera on the new 2.3-meter Aristarchos Telescope. Detailed measurements of the lobes have allowed the determination of their expansion velocity, distance, and ages. The results indicate their origin in a remarkable eruptive binary system. // P. Boumis/J. Meaburn