{
  "bibcode": "2018GCN.22507....1M",
  "body": "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:\n\nWe 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:\n\nMid time since GRB     Exp        Filter         Magnitude\n(days)                 (s)\n-------------------------------------------------------------\n0.11                   4x120      SDSS-R         19.04 +- 0.05\n0.12                   4x120      SDSS-I         18.88 +- 0.05\n-------------------------------------------------------------\n\nas calibrated against nearby SDSS stars.",
  "circularId": 22507,
  "createdOn": 1521202256000,
  "email": "mrtrnt@unife.it",
  "subject": "GRB 180316A: LCO Cerro Tololo observations",
  "submitter": "Renato Martone at Universita' di Ferrara  <mrtrnt@unife.it>",
  "eventId": "GRB 180316A"
}