[vsnet-grb-info 15357] GRB 140730A: LCO-Sutherland observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16647
SUBJECT: GRB 140730A: LCO-Sutherland observations
DATE:    14/07/31 15:02:56 GMT
FROM:    Simone Dichiara at Ferrara U/Italy  <dichiara at fe.infn.it>

S. Dichiara, C. Guidorzi (U. Ferrara), C.G. Mundell (LJMU),
A. Gomboc (U. Ljubljana) on behalf of a large collaboration report:

One of the Las Cumbres Observatory 1-m telescopes in Sutherland
(South Africa) began observing Swift GRB 140730A (Markwardt et al.
GCN Circ 16642) on July 31 at 01:16:34 UT, i.e.
~5.5 hours after the BAT trigger, with the r' and i' filters.

Within the enhanced XRT error circle (Goad et al. GCN Circ. 16644)
we found nothing down to the following limit:

Mid time from  Total Exp   Filter    Magnitude
trigger (hr)   (s)
-------------------------------------------------
5.64           120x5       r'        > 20.0
5.83           120x5       i'        > 19.8
-------------------------------------------------

Magnitudes are calibrated against nearby USNO-B1 stars.