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git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/development/trunk/hstwcs@7383 fe389314-cf27-0410-b35b-8c050e845b92

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diff --git a/wcsutil/mappings.py b/wcsutil/mappings.py
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+
+# This dictionary maps an instrument into an instrument class
+# The instrument class handles instrument specific keywords
+
+inst_mappings={'WFPC2': 'WFPC2WCS',
+                'ACS': 'ACSWCS'
+                }
+
+
+# A list of instrument specific keywords
+# Every instrument class must have methods which define each of these
+# as class attributes.
+ins_spec_kw = ['ltv1', 'ltv2', 'parity', 'binned','vafactor', 'chip', 
+            'naxis1', 'naxis2', 'filter1', 'filter2', 'detector']
+
+# A list of keywords defined in the primary header.
+# The HSTWCS class sets this as attributes 
+prim_hdr_kw = ['detector', 'offtab', 'idctab', 'date-obs', 
+              'pa_v3', 'ra_targ', 'dec_targ']
+
+# These are the keywords which are archived before MakeWCS is run
+basic_wcs = ['CD1_1', 'CD1_2', 'CD2_1', 'CD2_2', 'CRVAL1','CRVAL2','CTYPE1', 'CTYPE2',
+            'CRPIX1', 'CRPIX2', 'CTYPE1', 'CTYPE2', 'ORIENTAT', 'NAXIS1', 'NAXIS2']
+