GCN Circular 21124
Subject
GRB 170519A: MITSuME Akeno Optical Observation
Date
2017-05-22T06:07:27Z (8 years ago)
From
Taketoshi Yoshii at Tokyo Tech <yoshii.t.ac@m.titech.ac.jp>
K. Morita, Y. Saito, R. Itoh, T. Yoshii, Y. Tachibana, S. Harita, Y. Muraki,
T. Ozawa, K. Shiraishi, H. Mamiya, Y. Yatsu, and N. Kawai
(Tokyo Tech)
report on behalf of the MITSuME collaboration:
We searched for the optical counterpart of GRB 170519A (T. N. Ukwatta et al., GCN Circular #21106)
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 2017-05-19 11:03:14 UT (21192 sec after the burst).
We detected the optical counterpart (T. N. Ukwatta et al., GCN Circular #21106) in g', Rc and Ic band.
The measured magnitudes were listed as follows.
T0+[hour] MID-UT T-EXP[sec] g' Rc Ic
----------------------------------------------------------------------------
~5.9 11:34:54 4278 $B!!!!(B19.14+/-0.15 18.48+/-0.11 18.13+/-0.13
----------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.