A real challenge! Through the smoke of Canadian forest fires, during a full moon and under a Bortle 9 sky, this picture of the Tulip Nebula (SH2-101) was taken with about 10 hours of exposure in SHO from Montreal. there was a lot of struggle with the processing, especially to bring out the weak OIII signal...Interesting thing here, we can see the Cygnus X-1 binary system (above the Tulip nebula on the picture). It is a high mass X-ray binary system, it is a galactic source of X-rays. It was the first source of this type to be considered as a black hole.
TSA102

CEM70
Chroma 3nm filters
QHY294M