GCN Circular 4612
Subject
GRB050121b: optical observation
Event
Date
2006-01-28T02:17:21Z (20 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
D. Sharapov (MAO, and NOT La Palma), M. Ibrahimov (MAO), A. Pozanenko
(IKI), V. Rumyantsev (CrAO) on behalf of larger GRB follow up collaboration
report:
We observed error box of GRB051221b (Boyd et al., GCN 4376) with 1.5m
telescope of Maidanak Astronomical Observatory on Dec. 22 between (UT) 15:41
and 16:06. A set of 7x180 s images were obtained in R-band. We do not detect
the object at the location of the candidate optical counterpart reported by
Halpern & Tyagi (GCN 4381). Limiting magnitude of the stacked image is based
on USNO-B1.0:
Obs. time, Exposure, mag.(UL),Seeing
(UT) (s)
Dec.22 15:41 - 16:06 1260 22.3 1.2"
Combined images can be found at
http://grb.rssi.ru/GRB051221b/grb051221b_051222_R_AZT22.jpg
The message may be cited.