HS-1216- A NEW DOUBLE QSO SEPARATED BY 9''(5032 )

We report the discovery of a double QSO which was found during verific ation observations of QSO candidates of the Hamburg Quasar Survey. The A component has an apparent B magnitude of 17.2 and a redshift of 1.4 5. At a distance of 9.1 '' there is a second QSO with a B magnitude of 19.0 and the same redshift. In the range of the optical spectra obtai ned both objects show CIV (1549 Angstrom), CIII] (1909 Angstrom) and M gII (2798 Angstrom) emission lines. In the spectrum of the B component there is well seen a broad CIV absorption line with nearly the same r edshift which cannot be seen in the spectrum of the A component. In ad dition to the large separation of the two QSOs this strengthens the as sumption that this pair is a genuine binary QSO and not a gravitationa lly lensed single QSO. This new pair offers the possibility to measure the transverse size of Ly alpha clouds in the yet-unexplored redshift range z<1.4 with HST.