I took this picture last month while the Moon and Saturn rose over the arch and the sun was rising. Saturn was amazingly bright last month. I knew the moon was waning and would offer enough ambient light for the background all the way through to the La Salles. At the same time it was not to bright. I could still capture some stars. The snow on the mountain tops helped in lighting themselves up. I still needed some fill light for the arch. I light painted the arch with a flash light and some gels. I tried different color gels till I got what I wanted.