From the site:
"NGC3582 is a minor nebula in the Sagittarius arm of the Milky Way galaxy. It is part of star-forming region RCW 57 in Carina. This image was taken in 2007 using the Mosaic-2 imager on the Blanco 4-meter telescope at Cerro Tololo Inter-American Observatory."
Image: T.A. Rector/University of Alaska Anchorage, T. Abbott and NOAO/AURA/NSF [high-resolution]