The Rosette Nebula, NGC 2237, lies about 5000 light years away in the constellation Monoceros. It is about 100 light years across and has an open cluster of stars within it, NGC 2244. Interstellar winds from the stars are clearing an area from the middle of the nebula, and their ultraviolet emissions cause the red glow of the Hydrogen gases.
Taken on 2/12/04 with Takahashi FSQ106 and Canon 10d, stv guided. 12x5min@1600asa. Dark subtracted,aligned, avecombined, dig.devel in Images Plus and levels, curves in Adobe PS, sgbnr for smoothing.
(All images copyright © Kent V. Wood)