TITLE: GCN CIRCULAR NUMBER: 9714 SUBJECT: GRB 090726: D50 optical observations DATE: 09/07/27 14:27:51 GMT FROM: Martin Jelinek at Inst.Astrophys.Andalucia,Granada Cyril Polasek (1), Jan Strobl (1), Martin Jelinek (2), Petr Kubanek (3), Matus Kocka (1), Martin Nekola (1), Martin Blazek (1) and Rene Hudec (1) (1. ASU Ondrejov, 2. IAA Granada, 3. GACE Valencia) We observed the localization of the Swift GRB090726 (Page et al., GCN 9706) with the 50 cm telescope in Ondrejov (Czech Republic), starting at 22:45:41 UT, i.e. 194s after the GRB trigger. We clearly detect the afterglow reported by Moskvitin et al. (GCN 9709) in its rising phase on the first image with magnitude ~ 18.3 (same calibration as GCN 9709). This message can be cited.