NGC 3372 Eta Carina Nebula, narrowband image
Eta Carina is one of the largest diffuse Nebulae, some four times the size of the Orion Nebula and much brighter. The nebula is estimated to be 7,500 light-years away from Earth in the southern constellation Carina. The two most notable and well known features of the Eta Carina Nebula are the Eta Carina Star system and the Key Hole Nebula, both located in the yellow center section of the picture. The Eta Carina stellar system contains at least two stars with the largest estimated to be 100 times the mass of our sun, and a combined luminosity of over five million times that of our sun. Because of the star's age, size and the speed that the main larger star is losing its mass, the larger star is expected to explode as a supernova or hypernova in the near astronomical future. Data for this image was acquired with a Takahashi FSQ ED 106 / f/5 telescope and SBIG STL- 11000M CCD camera to collect the narrowband data.
Exposure was 1 hour each using Hydrogen Alpha, OIII and SII narrowband filters.
Note: The Ha, OIII and SII data was combined to create an artificial luminance (L) image and then the Ha date was blended with the artificial luminance to enhance the hydrogen in the nebula (LHa). This is called a Ha blended artificial luminance.
So this image is a LHa, Ha, OIII, SII image. Basically a modified Canada France Hawaii Telescope Palette image.