Image:Cygnus-X-1.jpg
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Portion of constelation of Cygnus showing the location of the blue giant star HDE226868 orbiting the X-ray source Cygnus X-1.
Cygnus X1 - HDE226868
RA: 19 58 21.68 Dec: +35 12 05.8 J2000B1950
Using a portion of the Second Palomar Observatory Sky Survey (POSS-II).
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- This image is copyrighted and is not licenced under the GFDL. The licence holder allows anyone to use it for any non-commercial purpose, provided that attribution is given.
The Second Palomar Observatory Sky Survey (POSS-II) was made by the California Institute of Technology with funds from the National Science Foundation, the National Aeronautics and Space Administration, the National Geographic Society, the Sloan Foundation, the Samuel Oschin Foundation, and the Eastman Kodak Corporation
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