TITLE: GCN CIRCULAR NUMBER: 12706 SUBJECT: GRB 111103A: optical upper limit of Mt. Terskol observatory DATE: 11/12/20 12:42:29 GMT FROM: Alina Volnova at SAI MSU A.Volnova (SAI MSU), M. Andreev, A. Sergeev (Terskol Branch of INASAN), V. Petkov (Baksan Neutrino Observatory of INR), N. Karpov, O. Andrienko, K. Martynyuk-Lototsky, N. Parakhin, N. Borachok, V. Kozlov, G. Butenko, V. Godunova (IC AMER, NASU), A. Pozanenko (IKI) report: We observed field of the Swift GRB 111103A (Stroh et al. GCN 12518) with Zeiss-600 telescope of Mt.Terskol observatory in R filter between Nov. 3 (UT) 16:16:02 - 16:49:00. We took 60 frames with exposure of 30 seconds under favourable weather conditions and seeing (FWHM) of about 1.5''. We do not detect any source on a stacked frame within BAT ground-calculated error circle (Sakamoto et al., GCN 12523). A photometry is based on the USNO B1.0 nearby stars. T0+ Filter, Exposure, OT, UpperLimit (mid, d) (s) 0.24836 R 60x30 n/d 16.6