GCN Circular 22516
Subject
GRB 180316A: TSHAO optical observations
Date
2018-03-18T18:33:32Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Kusakin (FAPHI), A. Pozanenko (IKI), I. Reva
(FAPHI), E. Mazaeva (IKI), M. Krugov (FAPHI) report on behalf of larger
GRB follow-up collaboration:
We observed the field of GRB GRB 180316A (Melandri et al., GCN 22500)
with Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory
starting on Mar. 17 (UT) 23:19:40. We obtained several images in
R-filter. The optical afterglow (Lipunov et al., GCN 22502; Schady et
al. GCN 22504; Martone et al. GCN 22507; Butler et al., GCN 22509;
Breeveld et al. GCN 22510) is marginally detected in a stacked image.
Preliminary photometry of the field is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2018-03-17 23:19:40 1.78280 R 36*60 21.5 0.5 21.0
The photometry is based on several nearby USNO-B1.0 stars.