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  • Kevin Hearn

The Rosette Comes to life

My image of the Rosette Nebula taken February 2022.


Combination of 30 x 5 minutes images using Red, Green, Blue + 39 x 5 Minute Images uisng Ha Filter. Total 5 Hours 45 Minutes integartion, stacked in deep skystacker, processed in Photoshop CS5.


Atik 460ex mono Camera, Stella Mira 90mm F6 Triplet Scope on EQ6 Pro Mount.

Bortle 4 Index rural site, Suffolk, England


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.


The Rosette Nebula (also known as Caldwell 49) 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 clusterNGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter.


Below: Trial 4 Panel Mosaic Image using Ha Filter only

Still work in progrees to produce an LRGB image of above Mosaic.

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