Thor's Helmet is one of the most interesting nebulas in canis Major is
Thor's Helmet. This nebula is 15,000 light-years away from us, approx
30 light-years across. The helmet part is more like a bubble expanding
from a massive star near the center. This star, known as a
Wolf-Rayet star, a pre supernova star fluffing off an incredable amount
of material. This nova is a 12.5 in magnitude. We're very pleased we could get it.
Date: 10 Feb 12
Images 270-20sec stacked