[vsnet-grb-info 2470] GRB051111: optical observaion

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4307
SUBJECT: GRB051111: optical observaion
DATE:    05/11/29 16:28:42 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

D. Sharapov, M. Ibrahimov (MAO), A.Pozanenko (IKI),V.Rumyantsev (CrAO) on
behalf of larger GRB follow up collaboration report:

We observed the error box of  GRB051111 (Sakamoto et al., GCN 4248) with
1.5m telescope of Maidanak Astronomical Observatory. Set of  BR images were
taken between Oct.11 (UT) 18.11 - 18.40. Optical source (Rujopakarn et al.,
GCN 4247) is detected in a stacked R-image. Preliminary photometry  against
of  USNO A2.0 is following:

Mid time,      Exposure, Filter, Mag.
(UT)             (s)

Nov.11 18:19:35  900     R   19.78 +- 0.14
Nov.11 18:34:51  600     B  >19.0 (3 sigma UL)

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