{
  "bibcode": "2016GCN.20309....1M",
  "body": "E. Mazaeva (IKI),   A. Mokhnatkin (KIAM),  A. Pozanenko (IKI), A. \nVolnova (IKI),   I. Molotov (KIAM)  report on behalf of  larger GRB \nfollow-up collaboration:\n\nWe observed the field of GRB 161219B (Swift trigger 727541; D'Ai,\nGCN 20296) with K-800 (0.8m) telescope  of ISON/Terskol   observatory \nstarting  on December, 19 (UT) 18:57:51, i.e. about 9 minutes after GRB \nonset.  We obtained several unfiltered images of 30 s exposure. The \noptical afterglow (D'Ai et al., GCN 20296; Kruehler et al., GCN 20299; \nGuidorzi et al., GCN 20300; Martin-Carrillo et al., GCN 20305) is \nclearly visible in separate images. Preliminary light curve of the \nafterglow can be found in\n\nhttp://grb.rssi.ru/GRB161219B/GRB161219B_161219_K800.png\n\nPhotometry is based on nearby USNO-B1.0 stars\nUSNO-B.1_id     R2\n0631-0120570    13.78\n0632-0119151    14.86\n0632-0119187    14.03\n0632-0119198    15.05\n0632-0119218    14.66\n0631-0120752    14.81",
  "circularId": 20309,
  "createdOn": 1482269152000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 161219B: ISON/Terskol optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 161219B"
}