[vsnet-grb-info 10116] GRB 110112A: MITSuME Akeno and Okayama optical upper limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  11566
SUBJECT: GRB 110112A: MITSuME Akeno and Okayama optical upper limits
DATE:    11/01/14 09:21:44 GMT
FROM:    Daisuke Kuroda at OAO/NAOJ  <dikuroda at oao.nao.ac.jp>

H. Nakajima (Tokyo Tech), D. Kuroda, K. Yanagisawa, Y. Shimizu,
H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima),
K. Ohta (Kyoto), Y. Yatsu, T. Enomoto, K. Kawakami, K. Tokoyoda,
T. Ohkawa and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration:

We observed the field of GRB 110112A (Stamatikos et al.,GCN 11553)
with the optical three color (g', Rc and Ic) CCD camera attached
to the MITSuME 50cm telescope of Akeno Observatory and Okayama
Astrophysical Observatory.

We did not find any new point source within the enhanced XRT error
circle (Evans et al., GCN 11556) in all the three bands. We could
not detect the previously reported afterglow (Xin et al., GCN 11554).

Three sigma upper limits of the OT are listed below. We used GSC2.3
catalog for flux calibration.

Akeno Observatory:
The observation started on 2011-01-12 09:07:48 UT (~5 h after the
trigger).
T0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic
------------------------------------------------------
0.21513    09:22:06    1200.0   >20.2  >20.0  >19.4
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]

Okayama Astrophysical Observatory:
The observation started on 2011-01-12 09:15:35 UT (~5.1 h after
the trigger).
T0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic
------------------------------------------------------
0.23603    09:52:11    3840.0   >19.9  >19.8  >19.3
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]