[vsnet-grb-info 20857] GRB 180715A: LCO Sutherland observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22955
SUBJECT: GRB 180715A: LCO Sutherland observations
DATE:    18/07/17 09:43:53 GMT
FROM:    Cristiano Guidorzi at Ferrara U,Italy  <guidorzi at fe.infn.it>

C. Guidorzi, R. Martone (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell 
(U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU), A. Cucchiara, 
D. Morris (U. of Virgin Islands) on behalf of a large collaboration report:

With reference to the observation of our previous report (Guidorzi et 
al. GCN 22949), within the XRT error circles of the five X-ray sources 
(Kennea et al. GCN 22953) we found no uncatalogued source down to 
r'>20.0 mag at a mid time of 0.28 hours after the GRB trigger time 
(5x120s exposure), as calibrated against nearby SDSS objects.