[vsnet-grb-info 2208] GRB050922B: optical limit

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4047
SUBJECT: GRB050922B: optical limit
DATE:    05/09/29 13:12:14 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

G. Kornienko (UAPhO), V.Rumyantsev (CrAO), A.Pozanenko (IKI) on behalf of 
larger GRB follow up collaboration report:

We have observed the error box of the Swift GRB050922B (Norris et al. GCN 
4008) with 0.4m telescope of  Ussuriysk Astrophysical Observatory (UAPhO) in 
R-band starting on Sep. 22 15:22 (UT). No new source was found in the GRB 
error box.  Upper limit of a stacked image (10x60 s) calibrated against  of 
USNO-A2.0 (R) is following:

Mid time,    Exposure, Filter, Limiting mag.
(UT)           (s)

Sep.22 15:37   10x60    R       16.0

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