TITLE: GCN CIRCULAR NUMBER: 17056 SUBJECT: GRB 141109A: NOT r-band observation DATE: 14/11/10 21:27:58 GMT FROM: Zach Cano at U of Iceland ​Z. Cano (U. Iceland), D. Malesani (DARK/NBI), K. Nilsson (FINCA), T. Kangas (U. Turku), P. Jakobsson (U. Iceland) report on behalf of a larger collaboration: We observed the field of GRB 141109A (D'Avanzo et al., GCN Circ. 17037) with the 2.5-m Nordic Optical Telescope (NOT) with ALFOSC starting at 04:39 UT on 10-Nov-2014. We obtained 3x300 s frames in the SDSS r-band filter. We clearly detect the optical afterglow of GRB 141109A (Covino, GCN Circ. 17039; Xu et al., GCN Circ. 17040; Graham et al., GCN Circ. 17041; Im et al., GCN Circ. 17042; Xin et al., GCN Circ. 17053), which has an apparent magnitude of r=22.1 +- 0.1 at a mid exposure time of +22.8 hr. The magnitude is not corrected for foreground extinction, and is calibrated using several nearby SDSS stars in the FOV.​