TITLE: GCN CIRCULAR NUMBER: 18972 SUBJECT: GRB 160131A: AbAO optical observations DATE: 16/02/01 20:28:41 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), R. Inasaridze (AbAO), V. Ayvazian (AbAO), A. Volnova (IKI), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of Swift GRB 160131A (Page et al., GCN 18951) with AS-32 (0.7m) telescope of Abastumani Observatory starting on Jan. 31 (UT) 19:16:57. We obtained several unfiltered images of 120 s exposure. We detect optical afterglow (Page et al., GCN 18951; Yurkov et al., GCN 18952; Guidorzi et al., GCN 18953; Xin et al., GCN 18954; Xin et al., GCN 18955; Watson et al., GCN 18956). Preliminary light curve can be found in http://grb.rssi.ru/GRB160131A/GRB160131A_20160131_AbAO_lc.png The photometry is base on nearby USNO-B1.0 stars: USNO-B.1_id R2 0829-0078223 15.70 0829-0078147 14.56 0828-0074893 14.88 0828-0074768 14.81