GCN Circular 17715
Subject
GRB 150413A: MITSuME Akeno Optical observation
Date
2015-04-17T13:17:03Z (10 years ago)
From
Taketoshi Yoshii at Tokyo Tech <yoshii.t.ac@m.titech.ac.jp>
T.Fujiwara, Y. Saito, T. Yoshii, Y. Tachibana, H. Ohuchi,
Y. Yano, S.Kurita, Y. Ono, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 150413A (C. B. Markwardt et al. GCN Circular #17688) 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 2015-04-13 15:58:02 UT (~2.1 h after the burst).
We detected the previously reported optical afterglow (K.Ivanov et al. GCN Circular #17689) in the Ic band.
The measured magnitudes are listed below.
T0+ MID-UT T-EXP[sec] g' Rc Ic
----------------------------------------------------------------------
263 min 4/13 18:17:28 240 > 17.3 > 17.2 16.09 +/- 0.30
2.04 days 4/15 14:52:50 15960 > 21.7 > 21.5 > 20.2
----------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.