Normalisation now changes data type.

tirl/timage.py

@@ -2164,7 +2164,7 @@ class TImage(TField):
         """
         # TODO: This is not compatible with HDD arrays.
         self._data.data = self._data.data / self._data.data.max()
-        self.dtype = self._data.data.dtype
+        # self.dtype = self._data.data.dtype
 
     def set_resolution(self, *resolution, unit="au"):
         """