GCN Circular 18758
Subject
GRB 151228B: MITSuME Akeno optical upper limits
Date
2015-12-29T21:44:48Z (9 years ago)
From
Taketoshi Yoshii at Tokyo Tech <yoshii.t.ac@m.titech.ac.jp>
Y.Muraki, T.Fujiwara, T. Yoshii, Y. Saito, Y. Tachibana,
Y.Yano, S.Harita, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We searched for the optical counterpart of GRB 151228B (A. Y. Lien et al., GCN Circular #18739) with the
optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm
telescope of Akeno Observatory, Yamanashi, Japan.
The observation started on 2015-12-29 09:55:19 UT (~11.1 h after the burst).
We did not find any new point source within Swift/XRT circle in all three bands.
We obtained following limits for the magnitudes.
T0+[sec] MID-UT T-EXP[sec] g' Rc Ic
-------------------------------------------------------------
40085 10:37:06 2507 > 20.9 > 20.6 > 19.6
-------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.