[vsnet-grb-info 17625] GRB 160223B: LCOGT-FTN optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  19062
SUBJECT: GRB 160223B: LCOGT-FTN optical observations
DATE:    16/02/23 20:02:48 GMT
FROM:    Simone Dichiara at Ferrara U/Italy  <dichiara at fe.infn.it>

S. Dichiara, C. Guidorzi (U. Ferrara), S. Kobayashi (LJMU),
A. Gomboc (U. Nova Gorica), C.G. Mundell (U. Bath), on behalf
of a larger collaboration report:

The 2-m LCOGT Faulkes Telescope North began observing
INTEGRAL and Fermi GRB 160223B (Gotz et al. GCN 19059,
von Kienlin et al., GCN 19061) on Feb 23 at 10:06:58 UT
(7.8 minutes after the burst trigger) with r filter.
We do not detect any optical afterglow candidate within the
INTEGRAL error circle (Gotz et al. GCN 19059) down to the
following magnitudes:

Mid Time      Exposure       Filter       Magnitude
(min)           (s)
-------------------------------------------------------
12.27          5x120            r'          > 20.5
-------------------------------------------------------

Values have been calibrated against nearby USNOB-1 stars
(R2)