TITLE: GCN CIRCULAR NUMBER: 19435 SUBJECT: SGR 1935+2154: AbAO optical upper limit DATE: 16/05/18 19:43:53 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Volnova (IKI), R. Inasaridze (AbAO), V. Ayvazian (AbAO), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of SGR 1935+2154 triggered by Swift (Barthelmy et al., GCN 19430; D'Avanzo et al., GCN 19433) and Fermi (Yu et al., GCN 19434) with AS-32 (0.7m) telescope of Abastumani Observatory starting on May 16 (UT) 23:26:26. We obtained several unfiltered images of the field. We do not detect any source within XRT error circle (D'Avanzo et al., GCN 19433). Preliminary photometry of the field is following Date UT start t-T0 Filter Exp. UL (3 sigma) (mid, days) (s) (after GCN 19430 trig.) 2016-05-16 23:26:26 0.14112 none 29*60 20.4 We also note a variable star in the field in coordinates (J2000) 19:34:30.09 +21:52:06.2 and R=15.33 +/- 0.04 which coincides with a star of USNO-B1.0 1118-0440363, R2 = 19.38. The star is not related to the SGR 1935+2154. Photometry is based on nearby USNO-B1.0 stars USNO-B1.0_id R2 1119-0448829 14.61 1119-0448214 16.24 1118-0440633 14.34 1118-0440733 14.93 A finding chart can be found at http://grb.rssi.ru/SGR1935+2154/SGR1935+2154_20160516_AbAO.png