{
  "bibcode": "2017GCN.21728....1L",
  "body": "J. Lyman (Univ. of Warwick), D. Homan (Univ of Edinburgh), P. D'Avanzo (INAF-OAB), Patricia Schady (MPE Garching), \nK. E. Heintz (DARK/NBI), E. Palazzi (INAF-IASFBo), L. Galbany (Univ. de Chile), J. Anderson (ESO), C. Inserra (Southampton), \nE. Kankare (QUB), K. Maguire (QUB), S. Smartt (QUB), K. W. Smith (QUB), O. Yaron (Weizmann), D. Young (QUB), \nI. Manulis (Weizmann) report:\n\n\nWe observed the field of GRB 170827A (Marshall et al., GCN 21718) under the extended Public ESO Spectroscopic Survey for \nTransient Objects (ePESSTO; see Smartt et al. 2015, A&A, 579, 40 http://www.pessto.org ). The observations were performed on \nthe ESO New Technology Telescope at La Silla with the SofI and EFOSC2 instrument in imaging mode starting from 2017-08-28 \nat 00:47:05 UT (i.e. 19.58 hours from the burst). Observations were carried out with the Z, J, R and I filters.\n\nWithin the XRT error circle (Marshall et al., GCN 21718) we detect an object at the following coordinates:\n\nRA(J2000), Dec(J2000) = 18:24:36.14, -40:12:06.3 \n\n(+/- 0.5\"). The object has a magnitude R~21.5 (based on preliminary photometry calibrated against the USNOB1 catalogue) at \nT-T0 = 20.08 hours. We cannot make any statement about variability at this time.We also notice the presence of a fainter object \nabout 2.4\" West.",
  "circularId": 21728,
  "createdOn": 1503887615000,
  "email": "paolo.davanzo@brera.inaf.it",
  "subject": "GRB 170827A: ePESSTO NTT afterglow candidate",
  "submitter": "Paolo D'Avanzo at INAF-OAB  <paolo.davanzo@brera.inaf.it>",
  "eventId": "GRB 170827A"
}