GCN Circular 17222
Subject
GRB 141221A: MITSuME Akeno upper limits
Date
2014-12-23T11:00:16Z (9 years ago)
From
Taketoshi Yoshii at Tokyo Tech <yoshii.t.ac@m.titech.ac.jp>
Y. Ono, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi,
Y. Yano, S. Kurita, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 141221A (E .Sonbas et al., GCN Circular #17206) 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 2014-12-21 17:20:13 UT (~9.1 h after the burst).
We did not find any new point source within the refined XRT error circle
(A.P. Beardmore., GCN Circular #17211) in all the three bands.
The measured magnitudes are listed below.
T0+[sec] MID-UT T-EXP[sec] g' Rc Ic
-----------------------------------------------------------------------------
33183 18:51:55 9600 >21.3 >20.8 >20.2
-----------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.