[vsnet-grb-info 21431] GRB 181213A : TSHAO optical observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Dec 14 02:46:22 JST 2018
TITLE: GCN CIRCULAR
NUMBER: 23530
SUBJECT: GRB 181213A : TSHAO optical observations
DATE: 18/12/13 17:45:03 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at iki.rssi.ru>
S. Belkin (IKI), A. Kusakin (FAPHI), A. Pozanenko (IKI), I. Reva
(FAPHI), A. Volnova (IKI), E. Mazaeva (IKI), M. Krugov (FAPHI) report
on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 181213A (Evans et al., GCN 23525; Osborne
et al., GCN 23528) with Zeiss-1000 1-m telescope of Tien Shan
Astronomical Observatory starting on Dec. 13 (UT) 13:39:23. We detected
the OT reported earlier (Lipunov et al., GCN 23526; Hu et al. GCN 23527;
Siegel et al., GCN 23529). Preliminary photometry of the object is
following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2018-12-13 13:39:23 0.04427 R 2640 17.27 0.08 21.8
The photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id R2
1684-0061916 15.83
1684-0061968 16.55
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