[vsnet-grb-info 18591] GRB 161014A: Kanata optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20039
SUBJECT: GRB 161014A: Kanata optical observation
DATE:    16/10/14 16:56:59 GMT
FROM:    Michitoshi Yoshida at HASC,Hiroshima U  <yoshidam at hiroshima-u.ac.jp>

Nakaoka, T., Kawahara, N., Yang, C., Nagashima, H, Yoshida, M.,
Kawabata, K. (Hiroshima Univ.) on behalf of the OISTER collaboration

We performed R band imaging observations around the error circle of
GRB 161014A (Racusin et al., GCN 20035) with the optical imager HOWPol
attached to Kanata telescope of Hiroshima University. The observation
was made at 2016-10-14 12:32:48 UT (mid time of the observation). We
detected the optical transient reported by Morita et al. (GCN 20036),
Guidorzi et al. (GCN 20037) and Xin et al. (GCN 20038) in our R-band
image. The detected magnitude and five sigma upper limit (in Vega
magnitude) of the OT are listed below.

# T0+   MID-UT     T-EXP    R mag.   R err   R limit
-------------------------------------------------------
   86    12:32:48   30       15.1     0.2     17.0
-------------------------------------------------------
T0+ : Elapsed time after the burst [sec]
T-EXP: Total Exposure time [sec]