the Rosetta nebula

This is my very first narrowband image. This is the Rosetta nebula presented in the Hubble color palette.

What that means is each of the RGB colors in this image comes from a small part of the spectrum of light emitted from the object. Those same parts of the spectrum also correspond to the chemical elements of the light source. What you see here is Sulphur II for the red channel. Hydrogen Alpha for the green channel and Oxygen III for the blue channel.

The Rosette Nebula is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula’s matter.

The cluster and nebula lie at a distance of 5,000 light-years from Earth and measure roughly 130 light-years in diameter. The radiation from the young stars excites the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.

12 hours of exposure.
45×300 Ha – 47×300 OIII – 52×300 SII
Orion 8″ Astrograph f3.9 – ZAW EAF
Baader MPCC
asi2600MM – LRN @ -15c
ZWO-OAG asi290mm guiding
CGX Mount – Sequence Generator Pro
Phd – PixInsight
Imaged from Palm Desert, CA USA.
Bortle 8