def _update_info(self):
try:<EOL><INDENT>self._FITS.movabs_hdu(self._ext+<NUM_LIT:1>)<EOL><DEDENT>except IOError:<EOL><INDENT>raise RuntimeError("<STR_LIT>")<EOL><DEDENT>self._info = self._FITS.get_hdu_info(self._ext+<NUM_LIT:1>)<EOL>
Update metadata for this HDU