[vsnet-grb-info 14818] GRB 140419A: MITSuME Ishigakijima Optical Observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16132
SUBJECT: GRB 140419A: MITSuME Ishigakijima Optical Observation
DATE:    14/04/20 10:22:25 GMT
FROM:    Daisuke Kuroda at OAO/NAOJ  <dikuroda at oao.nao.ac.jp>

D. Kuroda (OAO, NAOJ),  H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ),
K. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima),
K. Ohta (Kyoto) and N. Kawai(Tokyo Tech)
report on behalf of the MITSuME collaboration:

We observed the field of GRB 140419A (Marshall et al., GCNC 16118)
with the optical three color (g', Rc and Ic) CCD camera attached
to the Murikabushi 1m telescope of Ishigakijima Astronomical
Observatory.

The observation started on 2014-04-19 12:40:26 UT (~8.6 h after the burst).
We detected the previously reported afterglow (Marshall et al., GCNC 16118;
Zheng et al., GCNC 16119) in all the three bands.

Photometric results of the OT are listed below.
We used SDSS catalog for flux calibration.

#T0+[day]  MID-UT    T-EXP[sec]   g'  g'_err   Rc  Rc_err   Ic  Ic_err
----------------------------------------------------------------------
0.39781    13:39:41    5820.0    20.6  0.1    19.5  0.1    19.1  0.1
----------------------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]