The extensive Gum Nebula area in Vela, an interstellar bubble blown by winds from hot stars, with the False Cross at left. This is a stack of 4 x 5 minute exposures at f/3.2 with the Sigma 50mm lens and filter-modified Canon 5D MkII at ISO 800. Taken from Coonabarabran, Australia, December 2012. High cloud added natural glows around stars. Star clusters NGC 2516 (below False Cross) and IC 2391 (right of false Cross) stand out. Superhot star Gamma Velorum is at centre.
The Amazing Sky 