r/spaceporn – It Took 1,060 Hours to Capture This Stunning 204 Megapixel Photo of the Galaxy. (Link to high-res image in the comments).
r/spaceporn: SpacePorn is a subreddit devoted to high-quality images of space. As long as the focus of the image is of the stars or related to space in some way then it is allowed. This includes artwork as well as photography.