GCN Circular 17088
Subject
GRB 141121A: MITSuME Akeno Optical observation
Date
2014-11-23T11:44:55Z (9 years ago)
From
Taketoshi Yoshii at Tokyo Tech <yoshii.t.ac@m.titech.ac.jp>
S. Kurita, Y. Saito, Y. Tachibana, T. Yoshii, H. Ohuchi, Y. Yano,
Y. Ono, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 141121A (Lien et al., GCN Circular #17075) 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 2014-11-21 12:59:47 UT (~9 h after the burst).
We detected the previously reported optical afterglow (Tanga et al., GCN Circular #17078) in the g',Rc and Ic band.
The measured magnitudes are listed below.
T0+[sec] MID-UT T-EXP[sec] g' Rc Ic
----------------------------------------------------------------------
32947 17:07:07 12840 20.8 +/- 0.2 19.7 +/- 0.1 19.4 +/- 0.2
----------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.