{
  "bibcode": "2018GCN.22976....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), A. Cucchiara, D. Morris (U. of Virgin Islands) on behalf of a large collaboration report:\n\nThe LCO 2-m unit at Haleakala Observatory (Hawaii) began observing Swift GRB180720B (Siegel et al. GCN 22973)  on July 20, 14:33:34 UT (11.8 minutes after the GRB trigger time) with the SDSS i' filter. On the border of the Swift-XRT error circle, we detect a 13-mag uncatalogued object at the following position:\n\nRA(J2000)= +00:02:06.87\nDEC(J2000)= -02:55:05.2\n\nwith an error radius of ~1���  as calibrated against nearby SDSS stars.",
  "circularId": 22976,
  "createdOn": 1532100647000,
  "email": "mrtrnt@unife.it",
  "subject": "GRB 180720B: LCO Haleakala possible bright optical candidate",
  "submitter": "Renato Martone at Universita' di Ferrara  <mrtrnt@unife.it>",
  "eventId": "GRB 180720B"
}