GCN Circular 9741
A. Volnova (SAI MSU), E. Pavlenko, A. Sklyanov, O. Antoniuk (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 090726 (Page et al., GCN 9706) in R-filter on Jul. 27 between (UT) 18:19:22 - 20:28:58 with Shajn telescope of CrAO. We detect afterglow (Moskvitin et al., GCN 9709) in a stacked image. The photometry against nearby USNO-B1.0 stars is following: T0+ Filter, Exposure, mag., err. (d) (s) 0.8626 R 114x60 23.60 +/- 0.25 While the index of power law approximation of the light curve during early observation (Moskvitin et al., GCN 9709) is ~ -1.0, the power law index between observation presented by Moskvitin et al. (GCN 9709) and our observation is -1.6, clearly suggesting a break between 0.079 and 0.863 days.