GCN Circular 22507
Subject
GRB 180316A: LCO Cerro Tololo observations
Date
2018-03-16T12:10:56Z (6 years ago)
From
Renato Martone at Universita' di Ferrara <mrtrnt@unife.it>
R. Martone, C. Guidorzi (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell (U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU) on behalf of a large collaboration report:
We observed the field of Swift GRB180316A (Melandri et al., GCN 22500) on March 16, from 07:38 to 07:59 UT (mid time of 0.12 days post burst) with a 1-m unit LCO telescope in Cerro Tololo in the SDSS r��� i' filters. We detect the optical afterglow (Lipunov et al., GCN 22502; Schady and Steinmassl, GCN 22504) with the following magnitudes:
Mid time since GRB Exp Filter Magnitude
(days) (s)
-------------------------------------------------------------
0.11 4x120 SDSS-R 19.04 +- 0.05
0.12 4x120 SDSS-I 18.88 +- 0.05
-------------------------------------------------------------
as calibrated against nearby SDSS stars.