After spending a few cloudy nights on the Nullarbor plains the sky cleared on the last night and I pointed my Canon compact towards Crux as it was partially dipping below the horizon. After seeing the red glow near the pointers, I took another shot but the red glow was already fainter and it never returned over the next hour or so. The latitude was S31 degrees, on the 15th of November, at the end of astronomical twilight.