Merge pull request #171 from lsst/tickets/DM-21248

DM-21248: Do not attempt to create a WCS if the exposure is for an amp
lsst · Sep 17, 2019 · a047fbb · a047fbb
2 parents 069e110 + fd963a5
commit a047fbb
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/python/lsst/obs/base/cameraMapper.py b/python/lsst/obs/base/cameraMapper.py
@@ -1080,8 +1080,9 @@ def _standardizeExposure(self, mapping, item, dataId, filter=True,
 
         # We can only create a WCS if it doesn't already have one and
         # we have either a VisitInfo or exposure metadata.
-        if exposure.getWcs() is None and \
-           (exposure.getInfo().getVisitInfo() is not None or exposure.getMetadata().toDict() != {}):
+        # Do not calculate a WCS if this is an amplifier exposure
+        if mapping.level.lower() != "amp" and exposure.getWcs() is None and \
+           (exposure.getInfo().getVisitInfo() is not None or exposure.getMetadata().toDict()):
             self._createInitialSkyWcs(exposure)
 
         if filter: