Messier 33: The Triangulum Galaxy
L:Ha/R:G:B Image
120:50/50:35:20.
Total exposure 4 hr 35 mins
This face-on spiral galaxy lies at a distance of 2.3 million light years in the constellation Triangulum. It is 50,000 light years across.
Processed using luminance layering and a blended H-alpha/red channel