Double Supernova Remnants DEM L316 3.2

This week I chose to do the picture of a pair of supernova remnants known as DEM L316. The smaller shell appears to be the remnants of a White Dwarf supernova, while the larger one seems to be the leftovers of a massive normal star. The two supernova remnants do not appear to be colliding, so it is assumed that one is behind the other and they merely appear in the same location. Also, the two stars live on very different time scales, so they are not actually related. The remnants are located in the Dorado constellation, the swordfish.