process.py 文件源码

def _update_hdr_wcs(self, hdr, wcs_hdr):
        """Update a header with WCS parameters

        :param hdr: A pyfits.Header() instance

        :param wcs_header: A pyfits.Header() instance containing the
          new WCS parameters.
        """
        hdr.extend(wcs_hdr, strip=True,
                   update=True, end=True)

        # delete unused keywords created by pywcs
        if 'RESTFRQ' in hdr:
            del hdr['RESTFRQ']
        if 'RESTWAV' in hdr:
            del hdr['RESTWAV']
        if 'LONPOLE' in hdr:
            del hdr['LONPOLE']
        if 'LATPOLE' in hdr:
            del hdr['LATPOLE']
        return hdr