TITLE: GCN CIRCULAR NUMBER: 9610 SUBJECT: GRB 090529: Mt.Terskol optical observations DATE: 09/07/03 22:10:53 GMT FROM: Alexei Pozanenko at IKI, Moscow M. Andreev, A. Sergeev (Terskol Branch of Institute of Astronomy), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report: We report a photometry of the optical afterglow (Xin et al. GCN 9431) of the Swift GRB 090529 (Sakamoto et al. GCN 9430) observed with the Z-600 telescope of Mt.Terskol observatory in R-filter (Andreev et al, GCN 9437). The photometry is based on reference star USNO-B1.0 1144-0210607 (J2000) 14 09 58.32 +24 27 35.6), assuming R=16.46: T0+ Filter, Exposure, mag., (d) (s) 0.2420 R 20x120 21.13 +/- 0.2