TITLE: GCN CIRCULAR NUMBER: 20160 SUBJECT: GRB 161108A: TSHAO optical observations DATE: 16/11/09 21:29:59 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), I. Reva (Fesenkov Astrophysical Institute), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 161108A (Beardmore et al., GCN 20145) with Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory. We obtained several images in R filter starting on Nov. 08 (UT) 23:06:16. Within enhanced XRT position (Beardmore et al., GCN 20147) we detected a source coinciding with the afterglow of GRB 161014A (Malesani et al., GCN 20146; Butler et al., GCN 20149). Preliminary photometry of the source is following Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) 2016-11-08 23:06:16 0.83869 R 28*120 21.8 0.20 22.0 Our photometry of the afterglow might be affected by nearby galaxy mentioned in GCN 20149 (Malesani et al.) Photometry is based on nearby SDSS-DR9 stars (Lupton transformations): SDSS-DR9_id R(Lupton) J120315.88+245217.4 18.37 J120326.17+245228.7 18.71 J120318.05+245356.7 18.52 J120250.21+245354.3 18.35 J120258.81+245024.2 16.90 J120314.67+244944.0 17.06 J120321.43+244829.2 16.79