{
  "bibcode": "2017GCN.22205....1V",
  "body": "A. Volnova (IKI), A. Pozanenko (IKI),  E. Mazaeva (IKI),  M. Krugov (FAPHI), \nI. Reva (FAPHI),  A. Kusakin (FAPHI),   report on behalf of  larger GRB \nfollow-up collaboration:\n\nWe observed the field of GRB 171205A (D'Elia et al., GCN 22177)   with \nZeiss-1000 1-m telescope of Tien Shan Astronomical Observatory starting on \nDec. 06 (UT) 22:2319. We took several images in R-filter.  The afterglow of \nGRB 171205A (Izzo et al. GCN 22180; Emery et al. GCN 22181; Butler et al. \nGCN 22182; Mao et al. GCN 22186; Choi et al. GCN 22188; Melandri et al. GCN \n22189; Steeghs et al. GCN 22190; Cobb et al. GCN 22192; Volnova et al. GCN \n22193; Guidorzi et al. GCN 22197; Schmidl et al. GCN 22198; Lipunov et al. \nGCN 22199;  Ugarte Postigo et al. GCN 22204)  is marginally detected. \nPreliminary photometry is following.\n\nDate              UT start    t-T0         Filter Exp.    OT     Err.\n                       (mid, days)                       (s)\n\n2017-12-06  22:23:19 1.63574  R     1500    20.4  0.3\n\n\nThe photometry is based on several nearby USNO-B1.0 stars previously used in \nGCN 22193.",
  "circularId": 22205,
  "createdOn": 1512675056000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 171205A: TSHAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 171205A"
}