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Saturday, August 05, 2023

The Rosette Nebula: NGC 2237

The Rosette Nebula: NGC 2237

The Rosette Nebula (also known as NGC 2237 & 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 star cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. 

Distance: ~5,000 light years

An H II region or HII region is a region of interstellar atomic hydrogen that is ionized. It is typically in a molecular cloud of partially ionized gas in which star formation has recently taken place. 


Image Details 

Optics: 5-inch (127mm) Refractor Telescope (Tele Vue NP127is)

Camera: SBIG STL 11000 CCD Camera 


Image Credit & Copyright: Adam Block /Mount Lemmon SkyCenter/University of Arizona


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