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GCN Circular 12240

Subject
GRB110801A: MITSuME Ishigakijima Optical Observation at 1 day after the burst
Date
2011-08-03T04:58:24Z (13 years ago)
From
Daisuke Kuroda at OAO/NAOJ <dikuroda@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 110801A (De Pasquale et al., GCNC 12228)
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 2011-08-02 17:38:02 UT (~21.8 h after the burst).
We detected the previously reported afterglow (Pasquale et al.,
GCNC 12228; Zheng and Guver, GCNC 12229; Guelbenzu et al., GCNC 12230;
Kuroda et al., GCNC 12233) 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'  g'_err   Rc  Rc_err   Ic  Ic_err
----------------------------------------------------------------------
0.95038    18:38:15   5760.0     21.5  0.3    20.3  0.2   19.1   0.2
----------------------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
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