GCN Circular 23249
Subject
GRB 180914B : continued TSHAO optical observations
Event
Date
2018-09-17T20:04:01Z (8 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Pozanenko (IKI), I. Reva (FAPHI), A. Kusakin
(FAPHI), A. Volnova (IKI), M. Krugov (FAPHI) report on behalf of larger
GRB follow-up collaboration:
We observed the field of GRB 180914B (Ursi, et al., GCN 23226; Bissaldi
et al., GCN 23232; Frederiks et al., GCN 23240) with Zeiss-1000 1-m
telescope of Tien Shan Astronomical Observatory starting on September 17
(UT) 14:28:30. We observed the object reported e.g. (Zheng & Filippenko
GCN 23237; Troja et al. GCN 23238; de Ugarte Postigo et al., GCN 23239;
Paul & Kuin, GCN 23241). Preliminary photometry of the object is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2018-09-17 14:28:30 2.87843 R 60*60 20.53 0.07 22.2
The photometry is based on several nearby SDSS-DR9 stars
SDSS-DR9_id R(Lupton)
J220926.80+250130.1 15.705
J220922.87+250206.0 16.156
J220929.88+250257.7 15.812
J220928.05+250309.0 17.230
J220928.90+250327.6 15.524
J220924.12+250415.7 15.485
J220920.37+250610.6 15.050
J220902.04+250312.5 15.321