Combination of 50, 5 second exposures, SBIG ST9XE CCD camera. 50mm f/2.0 Nikkon lens.
The Coal Sack is a very large and prominent dark nebula on the border of Crux Australis and Centaurus. It is one of the closest of the dark nebulae, situated about 30 light years away. In aboriginal skylore it makes the head of the Emu.