make_lightcone.py 文件源码

def header(self):
        dDc = self.configs.Dc_cell
        Dc_min, Dc_max = self.configs.Dc_limit
        header = fits.Header()
        header["BUNIT"] = (self.configs.unit, "Data unit")
        header["zmin"] = (self.configs.zmin, "HI simulation minimum redshift")
        header["zmax"] = (self.configs.zmax, "HI simulation maximum redshift")
        header["dz"] = (self.configs.dz, "HI simulation redshift step size")
        header["Dc_min"] = (Dc_min, "[cMpc] comoving distance at zmin")
        header["Dc_max"] = (Dc_max, "[cMpc] comoving distance at zmax")
        header["Dc_step"] = (dDc, "[cMpc] comoving distance between slices")
        header["Lside"] = (self.configs.Lside, "[cMpc] Simulation side length")
        header["Nside"] = (self.configs.Nside, "Number of cells at each side")
        header["DATE"] = (datetime.now(timezone.utc).astimezone().isoformat(),
                          "File creation date")
        header.add_history(" ".join(sys.argv))
        header.extend(self.wcs.to_header(), update=True)
        return header