APOD: 2026 September 29: Sh2-188: The Shrimp Nebula

The Shrimp Nebula, Sh2-188, spans about half the diameter of the Moon, making it one of the larger planetary nebulas in the sky. Its white dwarf core is moving unusually fast, creating a bow shock like a boat plowing through water. The image was taken in hydrogen, sulfur and oxygen light with a backyard telescope in Krakow, Poland, so even a faint target like this is within reach of amateur gear.