TITLE: GCN CIRCULAR NUMBER: 17103 SUBJECT: GRB 141121A: TSHAO optical observations DATE: 14/11/27 00:21:38 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Volnova (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Kusakin (Fesenkov Astrophysical Institute), E. Mazaeva (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 141121A (Lien et al., GCN 17075) with Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory starting on Nov. 22 (UT) 21:45:26. We obtained several images in R-filter. In a combined image we clearly detect optical afterglow (Tanga et al., GCN 17078; Perley et al., GCN 17081). A preliminary photometry is based on nearby SDSS DR9 stars: date UT start t-T0 Filter Exp. OT OT_err (mid, days) (s) 2014-11-22 21:45:26 1.8093 R 26*300 20.88 0.03