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Chandra materials on this site have been produced for NASA at the Smithsonian Astrophysical Observatory (SAO) under contract NAS8-03060. For Chandra created content, no claim to copyright is being asserted and the material may be used in accordance with NASA guidelines. It is requested that use of this work by NASA/SAO be given all appropriate acknowledgement.

The Chandra web site also contains material created and/or prepared by individuals or institutions other than SAO, and those individuals or institutions may claim copyright. If you would like to use such material, inquiries should be made directly to those listed individuals/institutions.

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