TITLE:   GCN CIRCULAR
NUMBER:  8520
SUBJECT: GRB 081102: RTT150 Optical observations
DATE:    08/11/13 18:30:53 GMT
FROM:    Irek Khamitov at TUG  <irekk@tug.tug.tubitak.gov.tr>

I. Khamitov, M.Parmaksizoglu (TUG), S.Alis, M.Hudaverdi (Istambul Uni.),
Z. Eker (TUG), U. Kiziloglu (METU),  E. Gogus (Sabanci Uni.),
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI),
I. Bikmaev, N. Sakhibullin (KSU/AST)

report:

We observed the field of the Swift-BAT GRB 081102 (Ukwatta et al., 
GCN8462) with Russian-Turkish 1.5-m  telescope (RTT150, Bakirlitepe, 
TUBITAK National Observatory, Turkey), starting at 03 Nov, 17:44 UT, i.e. 
approximately 24.0 hours after the burst, using TFOSC CCD.

We made 3x300s exposures in R-band. We do not detect any new source inside
the XRT error circle (Osborne et al., GCN8467). Using USNO-B1 stars we 
estimated the limiting magnitude of combined image as m_R ~ 22.



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