TITLE: GCN CIRCULAR NUMBER: 12848 SUBJECT: GRB 120116A: Swift/UVOT Upper Limits DATE: 12/01/17 22:57:58 GMT FROM: Paul Kuin at MSSL N. P. M. Kuin (MSSL-UCL) and A. Melandri (INAF-OAB) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 120116A 83 s after the BAT trigger (Melandri et al., GCN Circ. 12834). No optical afterglow consistent with the enhanced XRT position Goad et al, GCN_Circ. 12846) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 83 233 147 >21.0 u_FC 296 546 246 >20.1 white 83 919 192 >21.1 v 4479 4679 197 >19.1 u 296 5173 324 >20.4 w1 4889 5089 197 >20.2 m2 4684 4884 197 >19.8 w2 4274 4474 197 >20.5 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998).