GCN Circular 15161

E. Sonbas (Adiyaman Univ.), U. Temiz (Cukurova Univ.), T. Guver (Sabanci
Univ.), Z. Eker (Akdeniz Univ.), S. Kaynar (TUG), E. Gogus (Sabanci Univ.),
H. Kirbiyik (TUG)  report on behalf of a larger collaboration

We observed the field of Swift  GRB 130831A (Hagen et al. GCN#15139)
with  the  1.0 meter  T100  telescope  (TUBITAK National  Observatory,
Antalya - Turkey),  starting August, 31; 18:27:23 UT (~ 5.4 hours after
the trigger). Observations were carried out in the R filter under moderate
weather conditions. We detected a new source in 300 s R band
image at a position that is consistent with Swift/UVOT (Hagen et al.
GCN#15139)
Using USNO-B1 star USNO-B1 1193-0589854  (RA=  23:54:29.226, Dec=
+29:23:08.41) in the field, the magnitude of the OT were estimated as;

t-t0 (hr)         exp.(s)      filt            mag             err (+/-)
5.38               300           R           17.98             0.034
5.48               300           R           17.99             0.035

Further observations using the same filter are ongoing.

We are grateful to the TUBITAK National Observatory staff for promptly
scheduling the observations and their technical support.