{
  "bibcode": "2014GCN.15949....1X",
  "body": "D. Xu (DARK/NBI), C.-H. Bai, X. Zhang, A. Esamdin, L. Ma (XAO) report:\n\nWe observed the field of  GRB 140311B (Racusin et al., GCN 15945)\nusing the 1m telescope located in Nanshan, Xinjiang, China.\nObservations started at 21:41:05 UT on 2014-03-11 and some 300s/600s\nR-band frames were obtained.\n\nThe afterglow is detected in each image within the XRT error circle\n(http://www.swift.ac.uk/sper/) at coordinates\n\nR.A. (J2000) = 16:49:17.97\nDec. (J2000) = +52:43:26.41\n\nUncertainty radius: ~1.5 aecsec\n\nThe first 300s image reveals that the afterglow has m(R)=20.6 at 29.1\nmin post-burst, calibrated with nearby two SDSS stars.\n\nObservations are ongoing.",
  "circularId": 15949,
  "createdOn": 1394578321000,
  "email": "dong.dark@gmail.com",
  "subject": "GRB 140311B: Nanshan afterglow detection",
  "submitter": "Dong Xu at DARK/NBI  <dong.dark@gmail.com>",
  "eventId": "GRB 140311B"
}