Just finisher Cygnus Loop project. This is supernova remnant, it's believed that at the time of explosion it could have been seen from Earth in a broad daylight, so powerful it was. It's consist of West and East Veil nebulas and few other pieces. Sh2-103 Cygnus Loop/Veil Nebula shot with Canon T3i, 135 mm, F/2.8, ISO 1600, L-Enhance filter. It's about 6 hours of total integration time. I've used dark frames in that one and not entirely sure if I like it. #astropic