{
  "bibcode": "2013GCN.14218....1W",
  "body": "J. Wren, W.T. Vestrand, P. Wozniak, and H. Davis,\nof Los Alamos National Laboratory report:\n\nThe RAPTOR network of robotic optical telescopes made follow-up observations\nof Swift trigger 548760 (D'Elia, et al., GCN 14204).  Our narrow-field\ninstruments in Los Alamos, NM USA, began imaging at 01:43:07.0 UT, 696.8 s\nafter the Swift BAT trigger.  We detect the optical counterpart initially\nreported by the ROTSE team (Zheng, et al., GCN 14205).  Our unfiltered images\nare calibrated to the USNO-B1 r-band.  The following table gives a sample of\nour observations.\n\nT-Start  Exp-Time   Mag +/- error\n------------------------------------\n696.85     5.0      13.73 +/- 0.014\n725.35     5.0      13.70 +/- 0.015\n762.35     5.0      13.74 +/- 0.014\n796.75     10.0     13.80 +/- 0.009\n927.55     10.0     13.98 +/- 0.010\n1089.9     30.0     14.13 +/- 0.006",
  "circularId": 14218,
  "createdOn": 1360951006000,
  "email": "jwren@nis.lanl.gov",
  "subject": "GRB 130215A: RAPTOR Measurements",
  "submitter": "James Wren at LANL  <jwren@nis.lanl.gov>",
  "eventId": "GRB 130215A"
}