TITLE: GCN CIRCULAR NUMBER: 16804 SUBJECT: GRB 140907A: Nishi-Harima NIR Observations DATE: 14/09/09 07:55:31 GMT FROM: Akira Arai at Nishi-Harima Astro. Obs/U of Hyogo J. Takahashi, A. Arai, S. Honda, Y. Takagi, K. Morihana (Univ. of Hyogo) report on behalf of Nayuta team and OISTER collaboration: We observed the field of GRB 140907A (H. A. Krimm et al., GCN 16788) with Nishiharima Infrared Camera (NIC) attached to the Nayuta 2-m telescope at the Nishi-Harima Astronomical Observatory. The observations were started at 19:00 UT on 2014-09-07. We detected the near-infrared afterglow in J, H and Ks bands. Photometric results of our observations are shown below. We used 2MASS 03123451+4635419, 03123283+4635411, and 03123016+4635375 as reference stars for photometry. # MID-UT Tmid-T0 T-EXP J_mag H_mag Ks_mag ----------------------------------------------------------------------- 19:07:32 3.0 600 17.5 +/- 0.2 17.0 +/- 0.1 16.6 +/- 0.3 ------------------------------------------------------------------------ Tmid-T0: Elapsed time after the burst (hours) T-EXP: Total Exposure time (seconds)