GCN Circular 5112
Subject
GRB060418: optical observations
Event
Date
2006-05-11T11:04:51Z (20 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
R. Karimov, B. Hafizov (MAO), A. Pozanenko (IKI), M. Ibrahimov (MAO) on
behalf of larger GRB follow up collaboration report:
We observed the afterglow of GRB060418 (Falcone et al. GCN 4966) with 1.5m
telescope of Maidanak Astronomical Observatory (MAO) in BRI-bands on April
18 between (UT) 19:54 and 22:37 (Hafizov et al. GCN 4990). A photometry
of the afterglow is following:
Mid_Time(UT), Filter, Exposure, Magnitude
18.857 B 7x180 s 22.38 +/- 0.10
18.853 R 7x120 s 21.14 +/- 0.05
18.855 I 9x120 s 20.66 +/- 0.04
18.934 I 9x120 s 20.35 +/- 0.04
The photometry is based on field stars calibration by Henden (GCN 4979) and
not corrected for Galaxy extinction. We note our I-observations indicate a
possible re-brighntening of the afterglow.
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