This object in the southern constellation of Norma looks a lot like
a typical planetary nebula from the end of a star's life, but it isn't.
In this case, an unusually large and hot star is ejecting material, which
then glows from the star's radiation. The dim, larger bubble comes from
material expelled during an earlier state in the star's life.
The nebula that is red in this image is from hydrogen, and the blue is from oxygen.

Telescope: Planewave 17”
Camera: SBIG STXL-11002
Exposure: 41.25 hours (LRGB, Hydrogen-alpha, Oxygen-III)
Location: Observatorio El Sauce, Chile