[vsnet-grb-info 13225] GRB 130504A: MITSuME Okayama upper limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14562
SUBJECT: GRB 130504A: MITSuME Okayama upper limits
DATE:    13/05/05 02:16:31 GMT
FROM:    Daisuke Kuroda at OAO/NAOJ  <dikuroda at oao.nao.ac.jp>

D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (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 130504A (Cummings et al., GCNC 14551)
with the optical three color (g', Rc and Ic) CCD camera attached
to the MITSuME 50cm telescope of Okayama Astrophysical Observatory.

The observation started on 2013-05-04 15:09:24 UT (~13.1 h after the burst).
We did not find any new point source within the enhanced XRT circle
(D'Avanzo et al., GCNC 14558) in all the three bands.

Photometric results of the OT are listed below.
We used GSC2.3 catalog for flux calibration.

#T0+[day]  MID-UT    T-EXP[sec]   g'     Rc     Ic
-----------------------------------------------------
0.58630    16:09:50    6360.0   >19.9  >19.7  >18.6
-----------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]