TITLE: GCN CIRCULAR NUMBER: 18676 SUBJECT: GRB 151205A: Khureltogot upper limit DATE: 15/12/09 10:19:21 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Volnova (IKI), S. Schmalz (AIP), E. Mazaeva (IKI), N. Tungalag (Research Center of Astronomy and Geophysics MAS), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of Swift GRB 151205A (Cummings et al., GCN 18657) with ORI-40 telescope of Khureltogot observatory starting on Dec., 5 (UT) 20:49:25, i.e. ~6 hours after the burst trigger. We do not detect any object within enhanced XRT error circle (Osborne et al., GCN 18658). Photometry of the field is following Date UT start t-T0 Filter Exp. Upper_Limit (3sigma) (mid, days) (s) 2015-12-05 20:49:25 0.24451 none 90*60 21.3 Photometry is based on nearby SDSS stars, R magnitude deduced from Lupton's transformations. SDSS id R(Lupton) J151723.45+354524.6 13.849 0.011 J151723.30+354351.0 14.562 0.012 J151718.79+354350.3 15.801 0.013