{
  "bibcode": "2014GCN.16453....1V",
  "body": "A. Volnova (IKI), W. Mundrzyjewski (Fesenkov Astrophysical Institute),  A. \nKusakin (Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on \nbehalf of larger GRB follow-up collaboration:\n\nWe observed the optical candiadate iPTF14cva (Kasliwal et al., GCN 16425) of \nFermi GRB 140620A  (Fermi trig. # 424934131)  (Fitzpatrick  et al., GCN \n16426)   with Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical \nObservatory on June, 20 starting (UT)  21:22:56.  We took several images in \nR-filter. We clearly detected optical transient (Siegel et al., GCN 16432; \nKelemen  GCN 16440) in a stacked image.\n\nDetails of the photometry are following:\n\ndate               UT start       t-T0           Filter   Exp.       OT\n                       (mid, days)                               (s)\n\n2014-06-20  21:22:56     0.68914    R        20*120  20.37 +/- 0.09\n\nThe photometry is based on  star USNO-B1.0 1397-0294956 (RA 18:47:28.76 Dec \n+49:43:44.5) assuming  R=16.35.",
  "circularId": 16453,
  "createdOn": 1403653158000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 140620A / iPTF14cva: TShAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 140620A"
}