GCN Circular 17215
Subject
GRB 141220A: MITSuME Akeno upper limits
Event
Date
2014-12-22T07:06:48Z (11 years ago)
From
Taketoshi Yoshii at Tokyo Tech <yoshii.t.ac@m.titech.ac.jp>
Y. Yano, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi,
S. Kurita, Y. Ono, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 141220A (J. R. Cummings et al., GCN Circular #17196) 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 2014-12-20 15:16:22 UT (~9.2 h after the burst).
We did not find any new point source within the refined XRT error circle
(B. P. Gompertz., GCN Circular #17203) in all the three bands.
The measured magnitudes are listed below.
T0+[sec] MID-UT T-EXP[sec] g' Rc Ic
-----------------------------------------------------------------------------
36707 18:07:29 8460 >21.4 >20.8 >20.4
-----------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.