GCN Circular 22505
Subject
GRB 180314A: MITSuME Okayama optical upper limits
Date
2018-03-16T11:29:04Z (6 years ago)
From
Katsuhiro L. Murata at Nagoya U <murata@u.phys.nagoya-u.ac.jp>
K. Shiraishi, R. Itoh, K. L. Murata, T. Yoshii, Y. Tachibana, S. Harita, K.
Morita, T. Ozawa, H. Mamiya, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We searched for the optical counterpart of GRB 180314A (P. D'Avanzo et
al., GCN Circular #22478) with the optical three color (g', Rc, and Ic) CCD
cameras attached to the MITSuME 50 cm telescope of Okayama Astrophysical
Observatory, Japan.
The observation started on 10:32:06 UT. We did not find any new point
source within enhanced XRT circle (J.P. Osborne et al., GCN Circular
#22480) in all three bands.
We obtained following limits for the magnitudes.
T0+[hour] MID-UT T-EXP[sec] g' Rc Ic
------------------------------------------------------------
-------------------------------------------
9.99 12:03:20 7240 >19.3 >18.8 >18.6
------------------------------------------------------------
-------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.