GCN Circular 13693
Subject
GRB 120811C: optical observations
Event
Date
2012-08-20T15:14:34Z (13 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Litvinenko (UBAI), A. Volnova (SAI MSU), I. Molotov (KIAM), A. Pozanenko
(IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 120811C (Barlow et al., GCN 13622) with
0.4-m telescope of ISON-Kitab observatory starting on Aug. 11 (UT)
15:53:49. We took several unfiltered images of 30 s exposures. The
optical afterglow (Denisenko et al., GCN 13623) is clearly detected in
single initial frames. A photometry of some co-added frames is based on
the SDSS stars
SDSS id RA Dec
R
J131912.45+621444.3 13 19 12,453 +62 14 44,35 16.63
J131815,89+621830,6 13 18 15,896 +62 18 30,67 16.64
is following:
T_start, T0+, Exposure, OT,
(UT) mid, d (s)
15:53:49 0.01392 4x30 17,90 +/-0.13
15:56:05 0.01569 5x30 17.95 +/-0.13
15:58:55 0.01841 10x30 18.20 +/-0.10
16:04:35 0.02356 15x30 18.45 +/-0.11
16:13:06 0.03145 25x30 18.40 +/-0.07