Merge pull request #9 from nden/refactor-and-tests

restructure and add stwcs tests

1 files changed, 29 insertions, 0 deletions

diff --git a/stwcs/wcsutil/mappings.py b/stwcs/wcsutil/mappings.py
new file mode 100644
index 0000000..24038bf
--- /dev/null
+++ b/stwcs/wcsutil/mappings.py
@@ -0,0 +1,29 @@
+from __future__ import division # confidence high
+
+# This dictionary maps an instrument into an instrument class
+# The instrument class handles instrument specific keywords
+
+inst_mappings={'WFPC2': 'WFPC2WCS',
+                'ACS': 'ACSWCS',
+                'NICMOS': 'NICMOSWCS',
+                'STIS': 'STISWCS',
+                'WFC3': 'WFC3WCS',
+                'DEFAULT': 'InstrWCS'
+                }
+
+
+# A list of instrument specific keywords
+# Every instrument class must have methods which define each of these
+# as class attributes.
+ins_spec_kw = [ 'idctab', 'offtab', 'date_obs', 'ra_targ', 'dec_targ', 'pav3', \
+                'detector', 'ltv1', 'ltv2', 'parity', 'binned','vafactor', \
+                'chip', 'naxis1', 'naxis2', 'filter1', 'filter2']
+
+# 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_', 'CD2_', 'CRVAL', 'CTYPE', 'CRPIX', 'CTYPE', 'CDELT', 'CUNIT']
+