{
  "bibcode": "2014GCN.16037....1V",
  "body": "A.Volnova (IKI), A. Pozanenko (IKI), I. Korobtsev (ISTP), E. Klunko\n(ISTP), M. Eselevich (ISTP), report on behalf of larger GRB follow-up\ncollaboration:\n\nWe observed the field of transient iPTF14yb (Cenko et al., GCN 15883,\nBeardmore et al., GCN 15884, 15891) a possible counterpart of GRB \n140226A (Hurley et al., GCN 15888) with AZT-33IK telescope of Mondy \nobservatory on Feb. 28 between (UT) 19:22:46 - 21:52:52 R-filter. On a \nstacked image of 75 x 120 s we clearly detected iPTF14yb source with a \nmagnitude of R = 22.86 �� 0.17 at Feb. 28.85959 (mid) or 2.44087 days \nafter GRB 140226A trigger (Hurley et al., GCN 15888).\n\nThe photometry is based on SDSS J144600.66+145826.2 star assuming\nR(Lupton transformation)= 17.624 +/- 0.018.",
  "circularId": 16037,
  "createdOn": 1395760292000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 140226A/iPTF14yb: Mondy optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 140226A"
}