This nebula is formed by
the fast stellar wind of the Wolf-Rayet star HD 192162
colliding with the slower wind that left this star ~ 300,000
years ago.
It is 5000 light years
away form us. It cannot be classified as a planetary nebula
as its central star is not a white dwarf.
This star looks as a
~7.5 mg variable star, a very massive red supergiant, 21
solar masses, with photospheric temperature 70,000 K.
Exposures: 1 hour in each of red, green, blue; 2.5 hours
in H-alpha, 2,5 hours [OIII], total 8 hours.