Wrekking a Two Tonner: Instagram favs - Pickering'S Triangle: The final region that we’re going to detail is the area known as Pickering’s Triangle with image provided by the great astrophotographer, Bill Snyder. This region of the Cygnus Loop is also roughly 15 light years-long and 3 light years-wide at its widest point. It’s called Pickering’s Triangle because, well it slightly resembles a triangle and Charles Pickering was credited with the discovery (Though he was just the Director of the observatory). If you're looking for it; this region in the original blue image a few posts ago, can be found at roughly 1 o'clock. In all, there are many more regions of the Cygnus Loop that named and cataloged, these are just a few of the major ones.