Awarded a Highly Commended (top 5) in the 2011 Royal Observatory Greenwich Astronomy Photographer of the Year

This is what National Geographic said about the image:

"Known as the fighting dragons of Ara, two colorful gas clouds appear to be posing in attack
position in a picture that received honorable mention in the "Deep Sky" category. Australian
astroimager Michael Sidonio captured subtle hues of purple, orange, and green from the giant
cloud of gas and dust, which sits 4,000 light-years from Earth in the southern constellation
of Ara. The 300-light-year-wide molecular cloud is being shaped by radiation from massive young
stars formed inside during the past few million years."

Check out this slide show of some of the winning images and narrated by the Royal Astronomers:
http://www.bbc.co.uk/news/science-environment-14792580