code: def set_mt_wcs(self, image):
          
          for chip in range(1,self._numchips+1,1):
              sci_chip = self._image[self.scienceExt,chip]
              ref_chip = image._image[image.scienceExt,chip]
              # Do we want to keep track of original WCS or not? No reason now...
              sci_chip.wcs = ref_chip.wcs.copy()
docs: Reset the WCS for this image based on the WCS information from
              another imageObject.