TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3617
SUBJECT: GRB 050713b: RTT150 optical observations
DATE:    05/07/15 08:19:09 GMT
FROM:    Irek Khamitov at TUG  <irekk@tug.tug.tubitak.gov.tr>

I. Bikmaev, A. Galeev, N. Sakhibullin (KSU/AST),
I. Khamitov, Z. Aslan (TUG), U. Kiziloglu (METU), A. Alpar (SabUni),
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), report:

    We have observed the field  of GRB050713b (Vaughan et al. GCN 3590)
on July 14, 2005, in Rc-band with ANDOR CCD attached to the  1.5-m
Russian-Turkish telescope (RTT150, Antalya, Turkey).
    The set of 30 sec exposures has been made with total exposure
time of 15 min and midpoint at UT = 22h 26min (~ 22 hours after
the burst). No new optical source was detected at the position of the 
X-ray source in the co-added frame with limiting magnitude of Rc = 22.4 mag.

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