GCN Circular 499
E.M. Leibowitz reports on behalf of the Wise Observatory team - U. Giveon, B. Bilenko, E. Ofek and Y. Lipkin: With the 1 m telescope of the Wise Observatory we have obtained 5 CCD R frames of GRB991216, each one of 5 minutes exposure. The mean UT time of all frames is Dec 17.7333. The R magnitude of the OT, as measured on the combined frame relative to 84 USNO-A1.0 catalogue stars, is 19.95 +-0.15. When measured relative to star "A" (GCN 476, 486, 498) the resulting magnitude is 19.89+-0.13. The combined image is placed at http://wise-obs.tau.ac.il/~eran/GRB991216/ This message can be cited.