GCN Circular 14474
Subject
GRB 130427A: optical observations in CrAO
Date
2013-04-27T21:13:31Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova ( IKI), D. Shakhovskoy (CrAO), V. Rumyantsev (CrAO), A.
Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We started observation of the field of the Swift GRB 130427A (Maselli et
al., GCN 14448) with AZT-11 telescope of CrAO observatory on Apr. 27 (UT)
18:21:45 in VRI filters. We clearly detect still bright optical counterpart
of GRB 130427A (Maselli et al., GCN 14448, Elenin et al. GCN 14450, Perley
GCN 14451). Preliminary photometry is following
filter tstart (UT) exp,s T-t0,d OT +/- err
R 18:21:45 120 0,76580 16,71 +/- 0,06
R 18:27:52 120 0,77005 16,87 +/- 0,06
R 18:34:00 120 0,77431 16,83 +/- 0,07
R 18:40:07 120 0,77855 16,81 +/- 0,06
Observation is continuing.