TITLE: GCN CIRCULAR NUMBER: 16484 SUBJECT: GRB 140629A: KWFC z-band photometry DATE: 14/06/29 21:41:04 GMT FROM: Daisuke Kuroda at OAO/NAOJ Hiroyuki Maehara (Univ. of Tokyo) reports on behalf of the OISTER collaboration: We observed the field of GRB 140629A (Lien et al. GCN 16477) with the 1.05-m Schmidt telescope and KWFC (Sako et al. 2012, Proc. SPIE 8446, 84466L) at Kiso Observatory in Japan. The observations were made in the Sloan z-band at 2014-06-29 14:30-14:39 (UT; 13-22 min post burst) and 16:30-16:45 (133-148 min post burst). We detected an uncatalogued fading source at RA=16:35:54.45, DEC=+41:52:36.6 (equinox 2000.0; uncertainty 0".3). Preliminary photometry of the source is as follows: obs. date (mid time) t-T0 (days) exp.(sec) filter mag limiting mag 2014-06-29 14:30:30 0.0090 180 sec z 14.89+/-0.02 19.4 14:34:47 0.0120 180 z 15.23+/-0.02 19.4 14:39:05 0.0150 180 z 15.50+/-0.02 19.4 16:30:34 0.0924 180 z 17.68+/-0.06 19.1 16:34:52 0.0954 180 z 18.01+/-0.08 19.1 16:45:18 0.1026 180 z 17.87+/-0.08 18.9 The photometry is based on z-mag of SDSS stars in the observed field.