{
  "bibcode": "2018GCN.23087....1R",
  "body": "G.Ramsay (Armagh O.), K.Ulaczyk, D.Steeghs, J.Lyman (U. Warwick),\nM.Dyer (U. Sheffield),  B.Gompertz, A.Levan, R.Cutter (U. Warwick)\nK. Ackley, D.Galloway, E.Rol (Monash U.), V.Dhillon (U. Sheffield),\nP.O'Brien, R.Starling (U. Leicester), S.Poshyachinda (NARIT),\nD.Pollacco (U. Warwick), E.Thrane (Monash U.), E.Palle (IAC)\n\nreport on behalf of the GOTO collaboration:\n\nIn response to GRB 180805B (D'Avanzo et al. GCN 23076), the\nGravitational-wave Optical Transient Observer (GOTO) observed the\nfield near the Swift BAT/XRT detection.\n\nObservations started at 2018-08-06T04:37:59 UT (15.5 hours after the\nburst) consisting of a set of 6x120s exposures in our wide L filter\n(400-700nm). We do not detect any optical source within the error\ncircle of the enhanced XRT location (Evans et al. GCN 23077) with a\n5-sigma limit of V=20.4, using APASS calibrators on the stacked image.\n\nWe note that our observations were obtained between those of Lupinov\net al. GCN 23085 and Malesani et al. GCN 23086.\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": 23087,
  "createdOn": 1533565576000,
  "email": "D.T.H.Steeghs@warwick.ac.uk",
  "subject": "GRB 180805B: GOTO optical limits",
  "submitter": "Danny Steeghs at U.of Warwick/GOTO  <D.T.H.Steeghs@warwick.ac.uk>",
  "eventId": "GRB 180805B"
}