TITLE: GCN CIRCULAR NUMBER: 10028 SUBJECT: GRB 090726 R band observations DATE: 09/10/16 21:08:29 GMT FROM: Janos Kelemen at Konkoly Obs/Hungary J. Kelemen (kelemen at konkoly.hu) on behalf of the GRB OT observing program at the Konkoly Observatory. We present photometry of the source reported by Moskvitin, Fatkhullin and Valeev (GCN 9709) which was found on a previous survey images made for asteroid astrometry. The object was observed from the Mountain Station of the Konkoly Observatory with a 60/90 cm Schmidt telescope using R filter and a CCD. The exposures were of 300 s. The table contains the time since the Swift GRB detection to the middle of exposure in seconds, R magnitude and formal 1-sigma magnitude error estimate. Comparison stars were from the USNO A2.0 catalogue. Aperture photometry results obtained using the ASTROMETRICA astrometry and photometry package. Time Mag Error. Flag. [s] [R] [1-sigma] ------------------------------------- 2010 18.21 0.05 2730 18.32 0.05 4530 18.82 0.05 78330 20.60 0.2 Upper Limit ------------------------------------- This message can be cited.