GCN Circular 11651

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 110205A (Beardmore et al., GCNC 11629)
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 2011-02-05 10:37:55 UT (~8.6 hours after
the burst). We detected the previously reported afterglow
(Klotz et al., GCNC 11630; Schaefer et al., GCNC 11631) in all the
three bands.


Photometric results and 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
----------------------------------------------------------------------
0.39965    11:38:11   6120.0    >20.1         19.4  0.2    18.5  0.2
0.48327    13:38:36   6300.0     20.6   0.3   20.4  0.3    19.7  0.3
0.56675    15:38:49   6300.0     21.2   0.4   19.8  0.2    19.7  0.2
----------------------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]