[vsnet-grb-info 17239] GRB 151114A: LCOGT-FTS afterglow observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18601
SUBJECT: GRB 151114A: LCOGT-FTS afterglow observations
DATE:    15/11/14 18:33:47 GMT
FROM:    Simone Dichiara at Ferrara U/Italy  <dichiara at fe.infn.it>

S. Dichiara  (U. Ferrara, ICRANet), C. Guidorzi (U. Ferrara),
A. Melandri (INAF-OAB), C.G. Mundell (U. Bath), S. Kobayashi (LJMU),
A. Gomboc (U. Ljubljana) on behalf of a large collaboration report:

The 2-m Faulkes Telescope South began observing Swift GRB 151114A
(Siegel et al. GCN 18599) on November 14, 12:18:07 UT (~2.3 hours after
the BAT trigger) with SDSS R and I filters.

we identify the optical afterglow (Siegel et al. GCN 18599) in the R
filter with R = 20.6 +/- 0.2 mag at a mid time of 2.64 hours post burst
(total exposure 600 s). The counterpart is detected also visible in
the I-band image.
Data reduction and calibration continue. The magnitude is calibrated
against nearby USNOB-1 stars (R2).