The Cygnus Loop is a large supernova remnant in the constellation Cygnus, and reaches its annual culmination at astronomical midnight and is best observed early August.
The Cygnus Loop is a large supernova remnant in the constellation Cygnus, and reaches its annual culmination at astronomical midnight and is best observed early August.
The Western Veil Nebula is a supernova remnant in the constellation Cygnus, and it reaches its annual culmination at astronomical midnight and is best observed early August.