Two colors of airglow
Milky way, galaxies, open clusters, California nebula, Gegenschein and two colors of airglow. Far source of light pollution is Tenerife with peak Pico de Teide. Canon 6D, Sigma 15 mm/f2.8@f3.5, ISO 10000, 53×15 s; 29th September 2013, Roque de Los Muchachos, La Palma, Canary islands.
