GCN Circular 12480
Subject
GRB 111022B: MITSuME Akeno Optical upper limits
Date
2011-10-23T07:51:48Z (13 years ago)
From
Yoichi Yatsu at Tokyo Tech. <yatsu@hp.phys.titech.ac.jp>
Y. Aoki, R. Usui, K. Tokoyoda, Y. Yatsu, K. Kawakami, M. Hayashi, S.
Song, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME
collaboration:
We observed GRB 111022B (S.T. Holland et al, GCN12472)
with the optical three color (g, Rc, and Ic) CCD camera attached
to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan.
The follow-up observation was started at 18:09:58, ~ 57 min after the
BAT trigger because of bad weather.
We did not find any new point source within the enhanced XRT error
circle (A.P. Beardmore et al, GCN12478) in three bands.
Photometric results and are listed below. We used GSC2.3 catalog for
flux calibration.
T0+[s] MID-UT T-EXP[sec] g' Rc Ic
---------------------------------------------------------------------------------
+7317 19:54:13 540 >17.8 >17.7 ---
+10426 20:12:52 360 --- --- >16.5
---------------------------------------------------------------------------------
T0+ : Elapsed time after the burst [sec]
T-EXP: Total Exposure time [sec]