{
  "bibcode": "2018GCN.22516....1V",
  "body": "A. Volnova (IKI), A. Kusakin (FAPHI), A. Pozanenko (IKI), I. Reva \n(FAPHI),  E. Mazaeva (IKI), M. Krugov (FAPHI) report on behalf of larger \nGRB follow-up collaboration:\n\nWe observed the field of GRB GRB 180316A (Melandri et al., GCN 22500) \nwith Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory \nstarting on Mar. 17 (UT) 23:19:40. We obtained several images in \nR-filter.  The optical afterglow (Lipunov et al., GCN 22502; Schady  et \nal. GCN  22504; Martone  et al. GCN  22507; Butler et al., GCN 22509; \nBreeveld et al. GCN  22510) is marginally detected in a stacked image. \nPreliminary photometry of the field is following.\n\nDate        UT start t-T0     Filter Exp.    OT    Err.  UL\n                      (mid, days)     (s)\n\n2018-03-17  23:19:40 1.78280  R      36*60   21.5  0.5   21.0\n\nThe photometry is based on several nearby USNO-B1.0 stars.",
  "circularId": 22516,
  "createdOn": 1521398012000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 180316A: TSHAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 180316A"
}