TITLE: GCN CIRCULAR NUMBER: 17033 SUBJECT: GRB 141026A: CrAO optical observation DATE: 14/11/06 18:49:43 GMT FROM: Alexei Pozanenko at IKI, Moscow V. Rumyantsev (CrAO), E. Mazaeva (IKI), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: The GCN #17032 should be read as following: (We are sorry for inconvenience) We observed the field of the Swift GRB GRB 141026A (Hagen et al., GCN 16950) with ZTSh telescope of CrAO observatory starting on Oct. 26 (UT) 18:25:48. We took several images in R-filter of 120 s exposure under poor weather conditions and mean seeing of 5". The optical afterglow (Littlejohns et al. GCN 16592; Varela et al. GCN 16953; Gorosabel et al. GCN 16954) is clearly visible in our stacked image. Photometry of a combined image is following Date UT start, t-t0 Filter Exp. OT OT_err (mid, days) (s) 2014-10-26 18:25:48 0.7020 R 53*120 21.88 0.18 The photometry is based on USNO-B1.0 stars RA DEC R 044,065509 +26,958050 18.71 044,051792 +26,894737 18.59 044,049131 +26,929059 17.48