A. Meshcheryakov (IKI), I. Khamitov (TUG), R. Burenin, M. Pavlinsky,
R. Sunyaev (IKI), Z. Eker (TUG), U. Kiziloglu (METU),
E. Gogus (Sabanci Uni.), I. Bikmaev, N. Sakhibullin (KSU/AST)
We observed the field of XRF 090702 detected with IBIS/INTEGRAL (Paizis
et al., GC N 9603;) with Russian-Turkish 1.5-m telescope (RTT150,
Bakirlitepe, TUBITAK National Observatory, Turkey), starting at 02 Jul,
18:54 UT, i.e. 8.2h after the burst.
We made 2x600s exposures in SDSS r filter. In the combined image we do
not detect any sources inside the XRT/SWIFT error circle (Sbarufatti &
Mangano, GCN 9604). Using SDSS catalog for photometric calibration, we
estimate 3-sigma upper limit for any optical counterpart as m_r > 22.4.