TITLE: GCN CIRCULAR NUMBER: 17059 SUBJECT: GRB 141109A: Terskol photometry DATE: 14/11/11 17:27:57 GMT FROM: Vladimir Sokolov at SAO RAS I.V. Sokolov (TF INASAN, Russia), V.N. Komarova, A.S Moskvitin, V.V. Sokolov, T.S.Sokolova (SAO RAS, Russia), report: We observed the field of GRB 141109A (D'Avanzo et al., GCN 17037) with the 2-meter telescope Zeiss-2000 (Terskol peak) on November, 10, in 20.7 hours after the trigger. 10 x 300 sec. images in I filter were obtained. The transient discovered by REM (Covino, GCN 17039) is clearly detected in the stack frame. The OT magnitude is I = 21.1 +/- 0.1. Photometry is based on the nearby SDSS stars. Their magnitudes were converted with the transformation equations from Lupon, 2005.