We have observed the field of GRB 090618 (Page et al., GCN 9706) with the 1-m telesecope of the SAO RAS in Caucasus. Within the XRT error circle (Page et al., GCN 9707) we detected one object which not present in the DSS. The object's coordinates are: R.A. (J2000.0) = 16:34:43.044 DEC. (J2000.0) = +72:53:04.82 with uncertainty about 0.5 arcsec. Using the USNO A2.0 star 1628-0121951 (R2=14.51) as a calibration we estimated the object's brightness as following: R_mag exp.(sec) mid.time (sec after the trigger) 18.26 +/- 0.05 60 2126 18.39 +/- 0.05 60 2252 18.33 +/- 0.05 60 2344 18.71 +/- 0.05 120 3183 18.97 +/- 0.05 180 4296 19.17 +/- 0.06 180 5492 19.28 +/- 0.07 240 6089 19.55 +/- 0.12 300 6824 According to its variability we concluded that the detected object is the OT of the GRB 090726. Further analysis are ongoing. This message may be cited.