GCN Circular 5741
Subject
GRB060904b: optical observations
Date
2006-10-20T20:42:14Z (19 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
I. Asfandyarov, M. Ibrahimov (MAO), A. Pozanenko (IKI), on behalf of
larger GRB follow up collaboration report:
We observed the error box of GRB060904b (Grupe et al., GCN 5505) with 1.5
m telescope of Maidanak Astronomical Observatory (MAO) on September 4 and
5. A set of R images were taken under good weaher conditions. The afterglow
(Rykoff et al., GCN 5504; Grupe et al., GCN 5505) is clearly detected in
combined images of each epochs. A photometry of the afterglow based on USNO
A2.0 is following:
Mid time (UT), Exposure (s), R_ mag., Seeing
Sep. 04.999 4x360 21.63 +/-0.18 1.4"
Sep. 05.993 4x300 22.40 +/-0.30 1.1"
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