TITLE: GCN CIRCULAR NUMBER: 17118 SUBJECT: GRB 141121A: Mondy optical observations DATE: 14/11/30 14:40:57 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), E. Klunko (ISTP), A. Volnova (IKI), I. Korobtsev (ISTP), M. Eselevich (ISTP), 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 AZT-33IK telescope of Sayan observatory (Mondy) Nov., 29 starting on (UT) 20:20:38. We obtained several images in R-filter under unfavorable seeing. In a combined image we detect optical afterglow (Tanga et al., GCN 17078; Perley et al., GCN 17081). A preliminary photometry of the OT is based on nearby SDSS DR9 stars: date UT start t-T0 Filter Exp. OT OT_err (mid, days) (s) 2014-11-29 20:20:38 8.7458 R 84*120 22.03 0.17 Due to bad seeing the photometry above includes both afterglow and possible host (Watson et al., GCN 17105; Mazaeva et al., GCN 17111).