[vsnet-grb-info 9571] GRB100802A: MITSuME optical upper limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  11041
SUBJECT: GRB100802A: MITSuME optical upper limits
DATE:    10/08/03 05:46:22 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 100802A (Troja et al., GCNC 11031)
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 2010-08-02 11:43:26 UT (~6 h after
the burst). We did not find any new point source within the XRT
error circle and the enhanced XRT error circle (Evans et al.,
GCNC 11036) in all the three bands. Also, we could not detect the
previously reported afterglow (Siegel and Troya, GCN 11032).

Three sigma upper limits of the OT are listed below. We used
GSC 2.3 catalog for flux calibration.


T0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic
------------------------------------------------------
0.29658    12:52:41  9480.0     >19.9  >19.8  >19.3
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]