This emission nebula in the constellation Swan has a central star (Walf-Rayet star) that is about 5 times brighter than our sun. It is at the end of its life and is already shedding its outer shells. This is the prelude to its end - a supernova.
These objects are centrally located in the zenith in summer and are close to the main star DENEB in the star sign Swan (Cygnus). Both are separated by a dark cloud, which is located in front of both objects.