TITLE: GCN CIRCULAR NUMBER: 17582 SUBJECT: GRB 150314A: NOT optical observations DATE: 15/03/14 22:13:53 GMT FROM: Dong Xu at DARK/NBI D. Xu (DARK/NBI), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), S. Geier (GTC/IAC), K. E. Heintz, J. P. U. Fynbo, D. Malesani (DARK/NBI), P. Jakobsson (U. Iceland) report on behalf of a larger collaboration: We observed the field of GRB 150314A (Hagen et al., GCN 17573) using the 2.56m Nordic Optical Telescope (NOT) equipped with the ALFOSC camera. We obtained 3x300 s R-band images with a median time of 20:48:36 UT on 2015-03-14, i.e., 15.89 hr after the burst, and in a seeing of ~0.9". The optical afterglow (Zheng & Filippenko, GCN 17574; Trotter et al., GCN 17577) is clearly detected in our stacked image, with m(R)=22.7 +/- 0.3 mag, calibrated with USNO B1 catalog. The object is a bit extended in the northwest-southeast direction, indicating that the host galaxy might be emerging at the observational time.