TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3777
SUBJECT: GRB050805b: CrAO optical limit
DATE:    05/08/06 16:36:32 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

E. Pavlenko, Yu. Efimov, A. Shlyapnikov, A. Baklanov, V. Rumyantsev  (CrAO),
A.Pozanenko (IKI), M. Ibrahimov (MAO) on behalf of larger GRB follow up
collaboration report:

We observed the entire field of GRB 050805b detected by SWIFT (trigger
149131) with the Shain 2.6m  telescope. The set of  300 seconds images in R
filter were taken between August, 5 21:23:44 - 22:21:01 (UT). No fading
source was detected as compared between single images. The typical limiting
magnitude of the single image is 23.0m.

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