GCN Circular 23244
Subject
GRB 180914B : TSHAO optical observations
Date
2018-09-17T10:26:49Z (6 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 16
(UT) 19:44:34, obtaining a total of 46.5 minutes exposure in the
Rc-band. Within XRT position (D'Ai et al., GCN 23236) we detect the
object reported by Zheng & Filippenko (GCN 23237), Troja et al. (GCN
23238), (Paul & Kuin, GCN 23241). Preliminary photometry of the objext
is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2018-09-16 19:44:34 2.07692 R 31*90 19.89 0.05 21.9
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
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