TITLE: GCN CIRCULAR NUMBER: 11153 SUBJECT: GRB 100814A: Maidanak optical observations DATE: 10/08/27 20:30:05 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Volnova (SAI MSU), A. Pozanenko (IKI), O. Vozyakova (SAI MSU), B. Satovski (Astrotel), M. Im (Seoul National Univ), M. Ibrahimov (MAO) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 100814A (Beardmore et al. GCN 11087) with AZT-22 telescope of Maidanak observatory. Several images in R were obtained starting on Aug. 14 (UT) 22:56:44. We clearly the afterglow (Schaefer et al. GCN 11086; Beardmore et al. GCN 11087). The photometry of stacked image against USNO-B1.0 field stars is following t-T0, Filter, Exposure, OT, Upper limit (3 sigma) (mid, d) (s) 0.81185 R 30*60 18.75+/-0.01 23.4 the photometry error is statistical only.