{
  "bibcode": "2018GCN.22879....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 180626C (GCN 22864, 22868,\n22871, 22874), the Gravitational-wave Optical Transient Observer\n(GOTO) observed the IPN triangulation region as reported in Svinkin et\nal. (GCN 22864).\n\nObservations were spread over several telescope array pointings,\nbeginning 2018-06-26T22:21 UT (13 hours after the burst) and employ\nsets of 3x120s exposures in our wide L filter(400-700nm).\nApproximately 95% 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=20.1-20.3 (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. Similar to\nthe searches reported in Coughlin et al. (GCN 22871) and Lupinov et\nal. (GCN 22874), we find no significant sources that could be credibly\nassociated with the GRB.\n\n\nGOTO is operated at the La Palma observing facilities of the University\nof Warwick on behalf of a consortium including the University of\nWarwick, Monash University, Armagh Observatory, the University of\nLeicester, the University of Sheffield, the National Astronomical\nResearch Institute of Thailand (NARIT) and the Instituto de Astrofisica\nde Canarias (IAC)\n\nhttps://goto-observatory.org/",
  "circularId": 22879,
  "createdOn": 1530479744000,
  "email": "D.T.H.Steeghs@warwick.ac.uk",
  "subject": "GRB 180626C : GOTO optical observations",
  "submitter": "Danny Steeghs at U.of Warwick/GOTO  <D.T.H.Steeghs@warwick.ac.uk>",
  "eventId": "GRB 180626C"
}