{
  "bibcode": "2018GCN.22878....1L",
  "body": "J.Lyman, D.Steeghs, K.Ulaczyk, A.Levan, B.Gompertz (U. Warwick),\nN.Tanvir (U. Leicester), M.Dyer (U. Sheffield), K. Ackley, D.Galloway,\nE.Rol (Monash U.), G.Ramsay (Armagh O.), V.Dhillon (U. Sheffield),\nP.O'Brien (U. Leicester), S.Poshyachinda (NARIT),\nD.Pollacco (U. Warwick), E.Thrane (Monash U.)\n\nreport on behalf of the GOTO collaboration:\n\n\nIn response to the short-duration GRB 180626B (GCN 22863, 22866), the\nGravitational-wave Optical Transient Observer (GOTO) observed the IPN\ntriangulation region as reported in Hurley et al. (GCN 22863).\n\nObservations were spread over several telescope array pointings,\nbeginning 2018-06-26T21:52 UT (20.1 hours after the burst) and\nemployed sets of 3x120s exposures in our wide L filter (400-700nm).\nApproximately 83% of the IPN region was covered on-chip. These fields\nwere repeated in subsequent nights to permit difference imaging\nanalysis and typically achieved a 5 sigma limiting magnitude of\nV=19.9-20.1 (based on zeropoints derived from APASS crossmatching).\n\nWe made use of the GLADE galaxy catalog to pay particular attention to\npossible source candidates near galaxies within 200 Mpc. No\nsignificant sources that could be credibly associated with the GRB were\ndetected.\n\nGOTO is operated at the La Palma observing facilities of the\nUniversity of Warwick on behalf of a consortium including the\nUniversity of Warwick, Monash University, Armagh Observatory, the\nUniversity of Leicester, the University of Sheffield, the National\nAstronomical Research Institute of Thailand (NARIT) and the Instituto\nde Astrofisica de Canarias (IAC)\n\nhttps://goto-observatory.org/",
  "circularId": 22878,
  "createdOn": 1530479694000,
  "email": "D.T.H.Steeghs@warwick.ac.uk",
  "subject": "GRB 180626B : GOTO optical observations",
  "submitter": "Danny Steeghs at U.of Warwick/GOTO  <D.T.H.Steeghs@warwick.ac.uk>",
  "eventId": "GRB 180626B"
}