NGC 2899 is a planetary nebula around 5000 light years away.
The central star has already exhausted its hydrogen core and transformed into a white dwarf. The outer layers of the star have separated with the core generating ultraviolet radiation. Gas ejected by the star glow due to this radiation and continue to be pushed out by the winds generated by the radiation.
This image shows the main body of NGC 2899 with the extended regions of gas that has moved far from the nebula proper.
Imaged in Ha OIII and RGB on our Planewave CDK 700 at Observatorio El Sauce, Chile.
Image Processing: Mike Selby