GCN Circular 17920
Subject
GRB 150608A: MITSuME Akeno optical upper limits
Date
2015-06-12T05:00:24Z (9 years ago)
From
Taketoshi Yoshii at Tokyo Tech <yoshii.t.ac@m.titech.ac.jp>
Y.Saito, T.Fujiwara, T. Yoshii, Y. Tachibana, H. Ohuchi, Y. Yano,
S. Kurita, Y.Ono, S.Harita, Y.Muraki, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 150608A (M.Arimoto et al., GCN Circular #17912) 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 2015-06-09 18:17:37 UT (~30.5 h after the burst). We cound not detect any optical point source in the error circle of the previously reported afterglow detected by Swift-XRT (M.G.Bernardini et al., GCN Circular #17917) in all three bands.
Three sigma upper limits are listed below.
T0+[hour] MID-UT T-EXP[sec] g' Rc Ic
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30.5131 18:23:03 600 > 17.9 > 18.0 > 17.4
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T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration