[vsnet-grb-info 15511] GRB 140907A: T100 observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16800
SUBJECT: GRB 140907A: T100 observations
DATE:    14/09/08 16:49:15 GMT
FROM:    Eda Sonbas at NASA/GSFC  <edasonbas at gmail.com>

E. Sonbas (Adiyaman Univ.), U. Temiz, H. Avdan (Cukurova Univ.), T. Guver
(Istanbul Univ.), E. Gogus (Sabanci Univ.), S. Eryilmaz (TUG), K. Yakut
(Ege Univ.), H. Kirbiyik (TUG) report on behalf of a larger collaboration


 We observed the field of Swift GRB 140907A (Krimm et al., GCN#16788) with
the 1.0 meter T100 telescope (Bakirlitepe, TUBITAK National Observatory,
Turkey), starting September, 7, 23:54:47 UT (~ 7.794 hours after the
trigger). Observations were carried out in the R filter. The afterglow is
clearly detected in 300 s in the R band images.


Using USNO-B1 star USNO-B1 1366-0072923 (R.A.=48.155, Dec=+46.614) in the
field, the magnitude of the OT was estimated as follows;

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

7.794 300 R 19.65 0.20


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