/ ciao4.16 / dictionary / wcs.html
Please read CXC Director Dr. Pat Slane's A Letter to the Community regarding NASA's plans to decommission Chandra.
WCS: World Coordinate System
A FITS standard for storing coordinate information for the data in a file. A detailed description of world coordinate systems is available from the SAO Telescope Data Center website.
/ ciao4.16 / dictionary / wcs.html