TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3955
SUBJECT: GRB 050906: RTT150 optical observations
DATE:    05/09/09 10:14:37 GMT
FROM:    Rodion Burenin at IKI, Moscow  <rodion@hea.iki.rssi.ru>

R. Zhuchkov, I. Bikmaev, N. Sakhibullin (KSU/AST),
I. Khamitov, Z. Aslan (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci U.),
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI)

report:

We observed the error box of GRB 050906 (Parsons et al., GCN 3935) with
Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National
Observatory, Turkey). We made 6x300s exposures in R and similar set of
exposures in I between 00:07--01:16 UT on Sep. 07, and also a set of 300s
exposures in R band between 00:46-01:35 UT on Sep 08.

Comparing our two epochs we found no new or fading source brighter than
R~22.9. The limiting magnitude in I is 20.5.

We specially checked that between our two epochs there were no new or
variable sources superimposed on the bright nearby galaxy IC 328 (Levan
& Tanvir GCN 3927).

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