GCN Circular 15797

E. Sonbas (Adiyaman Univ.), T. Guver (Istanbul Univ.), U. Temiz (Cukurova
Univ.), E. Gogus (Sabanci Univ.), M. Kocak (TUG), O. Erece (Akdeniz Univ.),
Z. Eker (Akdeniz Univ.) report on behalf of a larger collaboration


 We observed the field of Swift GRB 140206A (Lien et al., GCN#15784) with
the 1.0 meter T100 telescope (Bakirlitepe, TUBITAK National Observatory,
Turkey), starting February, 06, 16:33:24 UT (~ 9.268 hours after the
trigger). Observations were carried out in the R filter under good weather
conditions. The afterglow is clearly detected in 300 s in the R band images
at a position that is consistent with Oksanen et al. GCN#15786 and Oates et
al., GCN#15787

Using USNO-B1 star USNO-B1 1567-0128093 (R.A.=9:41:23.33, Dec=+66:44:32.31)
in the field, the magnitudes of the OT were estimated as follows;

t-t0 (hr) exp.(s) filt mag err (+/-)

9.590 300 R 18.65 0.05

9.689 300 R 18.77 0.06

9.788 300 R 18.75 0.06

10.380 300 R 18.89 0.06

 Further observations using the same filter are ongoing.

We are grateful to TUBITAK National Observatory for prompt scheduling the
observations and technical support.