The Eta Carina nebula is one of the jewells of the Southern Skies, it was formed by the ejection of material from Eta Carina.
Eta Carina is a massive star with about 120-150 solar masses that is 7500-8000 light years away. This star has an erratic behaviour and will explode some day in a cataclismic supernova or maybe even an hypernova.
Today Eta-Carina is around magnitude 4 but in 1843 it reached magnitude -0.8 becoming the 2nd brightest star in the sky after Sirius. This event ejected part of the material that we can see today as the nebula.
I can be seen with the naked eye and contrast in a beautiful way with the dark coalsack nebula that is nearby.
Comet C/2012 F6 Lemmon a comet with a period of 11.000 years that brightened more than expected reaching naked eye visibility in the first months of 2013. This comet was very favorable to South Hemisphere observers passing by the south celestial pole and becoming circumpolar for most locations south of the equator.