GCN Circular 18491
Subject
GRB 151027A: MITSuME Akeno Optical observation
Date
2015-10-27T16:23:13Z (9 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, S. Harita, Y. Muraki, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 151027A (A. Maselli et al., GCN Circular #18478) 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 2015-10-27 09:13:52 UT ( 5.25 h after the burst).
We detected the previously reported optical afterglow of GRB 151027A
(WeiKang Zheng et al., GCN Circular #18479) in the g',Rc and Ic band.
The measured magnitudes are listed below.
T0+[sec] MID-UT T-EXP[sec] g' Rc Ic
------------------------------------------------------------------------------------------------------------------
18928 09:34:24 2220 16.72+/-0.06 15.62+/-0.05 16.00+/-0.04
------------------------------------------------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.