U. Kiziloglu (METU), I. Khamitov (TUG), Z. Aslan (TUG),
E. Gogus (Sabanci Uni.),
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI)
I. Bikmaev, N. Sakhibullin (KSU/AST),
We observed the field around the XRT error circle (Holland et al.,
GCN5612) of GRB060926 (Swift trigger 231231) with the Russian-Turkish
1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory,
Turkey), at the 17:45 UT of Sep 26, about 56 minutes after the burst.
A series of frames (3*300sec) were taken in R band with TFOSC.
At the position of UVOT afterglow candidate (GCN5612) we detect a faint
source which faded more than 1 mag according to early detection
(Stefanescu et al., GCN5614).
Using USNO-B1 star (RA=17:35:42.06, DEC=+13:02:11.7, R2MAG=18.96) we
estimate the following R magnitude for the source:
t-t0 m_R err
66.5 20.8 0.1
This message may be cited.