Rosette Nebula

Designation: C 49
Hemisphere: Northern
Constellation: Monoceros
Distance: 5,200 light years
Object type: Emission nebula


C 49 is a large region of interstellar gas, mostly ionized hydrogen, whose shape resembles that of a rosette, hence the informal name Rosette Nebula; located approx. 5,000 light years from Earth in the constellation Monoceros, the Unicorn, the nebula stretches about 130 light years across.

This is a star-forming region containing roughly 2,500 young stars, according to latest estimations. At the core of the Rosette Nebula is the open cluster NGC 2244, which is closely associated with the nebulosity, and is an example of stars formed from the nebula’s gas and dust.

Super hot stars (O-stars) within C 49 produce radiation and stellar winds that contribute to shape the nebula by excavating the layers of dust and gas away in its core.


Mount: Celestron Evolution
Main Telescope: William Optics ZS73EDii
Main camera: ZWO ASI183MC-Pro
Main camera filter: Optolong L-eNhance

Acquisition details

Total integration time: 3 hours
Acquisition software: SharpCap Pro
Processing software: PixInsight
Location: Luxembourg

Full size image

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