TITLE: GCN CIRCULAR NUMBER: 17029 SUBJECT: GRB 141031B: TShAO optical observations DATE: 14/11/05 19:27:48 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Volnova (IKI), A. Khruslov (INASAN), A. Kusakin (Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the GRB 141031B (Gompertz et al., GCN 16998) with Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical Observatory on Oct., 31 starting on (UT) 15:39:02. Within enhanced XRT error circle (Goad et al., GCN 17009) we do not detect any object either in a single image (Mazaeva et al., GCN 17007) or in combined image of a total exposure of 4800 s. Details of the photometry are following: date UT start t-T0 Filter Exp. UL (3 sigma) (mid, days) (s) 2014-10-31 15:39:02 0.03284 R 600 21.5 2014-10-31 15:39:02 0.05837 R 8*600 22.3 The photometry is based on following SDSS DR9 stars: SDSS_id R_Lupton err J234748,81+411954,3 16.430 0.014 J234749,26+412154,3 16.866 0.014 J234741,02+411920,5 17.452 0.015