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The Crescent Nebula (NGC 6888), which surrounds the Wolf-Rayet star PPM 84423 or HD192163, seen in Hydrogen-α emission. This was observed as part of the Isaac Newton Telescope/Wide Field Camera Photometric Hydrogen-α Survey (IPHAS) of the Galactic Plane. NGC 6888 is the illuminated ejecta of the star HD192163. This image combines data from all three IPHAS survey passbands (Hα Sloan r and i) in a false colour composite. Emission in the Hα narrow band is in red. The orientation is with N to the left and E down, and the image scale is about 20 x 18 square arcminutes.
CREDIT
Image based on data obtained as part of the INT Photometric Hα Survey of the Northern Galactic Plane: prepared by Jonathan Irwin (Institute of Astronomy, Cambridge).
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