The Eta Carina Nebula is a large bright nebula that has within its boundaries several related open clusters of stars.
Bright Eta Carinae at the center is a highly luminous hypergiant star. Estimates of its mass range from 100 to 150 times the mass of the Sun, and its luminosity is about four million times that of the Sun. Eta Carinae's effects on the nebula can be seen directly. The dark globules in the image have tails pointing directly away from the massive star. The entire nebula would have looked very different before the Great Eruption in the 1840s surrounded Eta Carinae with dust, drastically reducing the amount of ultraviolet light it put into the nebula.
Find an extremely detailed central image of this nebula from Hubble here.
Ha-OIII-SII-RGB (Ha 10x20m, OIII 7x20m, SII 6x20m, R 6x5m, G 6x5m, B 6x5m) Seeing 0.7-1 arcsec, North is up;
80cm f/7 Astrooptik Keller corrected cassegrain, FLI Proline 16803, Baader Filters
|NB version by Wolfgang Promper||NB central crop by Johannes Schedler|
|More NB nebula details (HH 901) by Johannes Schedler||more NB nebula details by Johannes Schedler|
|HaO3RGB version by Johannes Schedler||Ha version by Johannes Schedler|