NGC 2899 is a planetary nebula in the constellation Vela at a distance of nearly 6500 light years which lies in a moderate rich star zone. It was discovered by John Herschel in 1835. If you will see an image you will find its structure is very unusual. Even its colour is unusual as 90% of planetary nebulae appears to be bluish or greenish in colour photos but this one is red. The central star is invisible to all amateur telescopes.
http://www.airglow.de/html/nebulae/ngc2899.html
http://www.blackskies.org/nsp12.htm
http://dg-imaging.astrodon.com/gallery/display.cfm?imgID=168
http://adsabs.harvard.edu/abs/2009Ap&SS.tmp..115A
