Pickering's Triangle, part of the Cygnus Loop, has some beautiful structure. The gasses were thrust outward, and excited, by the energy of the supernova. I used a Celestron Edge HD 925 with a 0.7 reducer, an ASI 2600MC Pro, IDAS NBZ filter. Fighting the full moon, I managed to get 6 hrs 30 minutes total exposure time, with 78 x 300s subs. I processed it in SiriL, Starnet and GIMP.