ARD: Analysis Reference Data
Calibration data files in the CALDB. Standard FITS file formats suitable for use by CIAO tools. (e.g. ARF, RMF, and PSF). Deprecated, archaic term.
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The Chandra X-Ray
Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA. Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved. |