{
  "bibcode": "2017GCN.21991....1G",
  "body": "C. Guidorzi (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell (U. Bath), \nA. Gomboc (U. Nova Gorica), I.A. Steele (LJMU) on behalf of a large \ncollaboration report:\n\nWe began observing Fermi LAT GRB 171010A (Omodei et al. GCN 21985) on \nOctober 11, from 02:15 to 02:28 UT (7.2 hours since the GRB trigger \ntime) with one of the 1-m LCO telescopes in Sutherland in the SDSS-I \nfilter. Within the enhanced Swift-XRT circle (D'Ai et al. GCN 21989) we \nclearly detect the optical afterglow (Thorstensen and Halpern, GCN \n21987; Izzo and Malesani, GCN 21988) with the following magnitude:\n\nMid Time����� Exposure������ Filter������ Magnitude (AB)\n(hrs)���������� (s)\n-------------------------------------------------------\n7.3����������� 5x120�������� SDSS-I������ 16.82 +- 0.02\n-------------------------------------------------------\n\nas calibrated against nearby Pan-STARRS objects.",
  "circularId": 21991,
  "createdOn": 1507731435000,
  "email": "guidorzi@fe.infn.it",
  "subject": "GRB 171010A: LCO 1m telescope observations",
  "submitter": "Cristiano Guidorzi at Ferrara U,Italy  <guidorzi@fe.infn.it>",
  "eventId": "GRB 171010A"
}