GCN Circular 5181
Subject
GRB060526: optical observations
Date
2006-05-28T21:42:04Z (18 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V.Rumyantsev (CrAO), A. Pozanenko (IKI) on behalf of larger GRB follow
up collaboration report:
We observed optical transient of GRB060526 (Campana et al. GCN 5162, French
& Jelinek GCN 5165, Rykoff et al. GCN 5166) with the Shajn 2.6m telescope of
CrAO between May 27 (UT) 18:27 - 20:05 in R and B bands. In combined images
we detect OT in R and do not detect it in B-band. The photometry of the OT
and upper limits are following:
Mid time Filter Exp. OT, mag. Limiting mag.
(UT) sec
May 27.803 R 18x60 20.25 +/-0.04 23.0
May 27.777 B 6x120 - 20.6
The photometry calibration is based on USNO A2.0 field stars. (We note that
R magnitudes of field stars in USNO A2.0 are somewhat brighter (~0.2m) than
those in USNO B1.0). The R-combined image can be found in
http://grb.rssi.ru/GRB060526
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