I. Bikmaev (KFU/AST), I. Khamitov (TUG),
E. Irtuganov, N. Sakhibullin (KFU/AST),
R. Burenin, M. Pavlinsky, R. Sunyaev (IKI),
H. Kirbiyik (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.)
The field of the optical afterglow of GRB 140629A (Lien et al., GCN
16477, Yurkov et al., GCN 16478) was observed with Russian-Turkish
1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory,
Turkey) using the TFOSC instrument.
We obtained series of BVRcIc exposures. Start time is June 29, 18:33
UT. The optical transient is clearly detected in each images at
RA,DEC = 16:35:54.44 +41 52 36.7 +/- 0.1 arcsec (J2000).
Using the star at RA,DEC = 16:35:59.9 +41:51:10 (J2000) with USNO-B1
magnitude R1_mag = 16.49 as a reference we estimated the Rc-magnitude
of the afterglow:
Filter exptime T-T0, Mag. +/- Mag.err
Rc 60 4.267 18.00 +/- 0.05
Further OT observations are ongoing at RTT-150.