[vsnet-grb-info 15209] GRB 140629A: MITSuME Akeno Optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16501
SUBJECT: GRB 140629A: MITSuME Akeno Optical observation
DATE:    14/07/02 06:24:29 GMT
FROM:    Taketoshi Yoshii at Tokyo Tech  <yoshii.t.ac at m.titech.ac.jp>

Y. Yano, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi,
S. Kurita, Y. Ono, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:

We observed the field of GRB 140629A (A. Y. Lien et al., GCN Circular #16477) with the
optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm
telescope of Akeno Observatory, Yamanashi, Japan.

The observation started on 2014-06-29 14:23:32 UT (6 min after the burst).
We detected the previously reported optical afterglow of GRB140629A 
(V.Yurkov et al., GCN Circular #16478) in the g', Rc and Ic band.

The measured magnitudes are listed below.

T0+[sec]    MID-UT   T-EXP[sec]         g'                       Rc                   Ic
----------------------------------------------------------------------------------------------------
362           14:24:02     60.0          15.06+/-0.04  14.25+/-0.03 13.83+/-0.03
11482      17:43:45     600.0        18.77+/-0.23  18.06+/-0.16 17.67+/-0.21
----------------------------------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.