{
  "bibcode": "2014GCN.16167....1T",
  "body": "J. Takahashi and A. Arai (Univ. of Hyogo)\nreport on behalf of the Nayuta team and the OISTER collaboration:\n\nWe observed the field of GRB 140423A (Sonbas et al., GCN 16142)\nwith Nishiharima Infrared Camera (NIC) attached to the Nayuta 2-m\ntelescope at the Nishi-Harima Astronomical Observatory.\n\nThe observations were conducted on 2014-04-23 at 10:05-10:29 UT and\n13:03-13:53 UT.\nWe detected the near-infrared afterglow in H and Ks bands.\n\nPhotometric results of our observations are listed below.\nWe used 2MASS 13085994+4951082 as a reference star for photometry.\n\n# MID-UT   Tmid-T0 T-EXP  H_mag   Ks_mag*\n-----------------------------------------------------------------------\n10:17:20   1.76    300    17.0 +/- 0.2 16.6 +/- 0.2\n10:25:50   1.90    300    17.2 +/- 0.2 16.6 +/- 0.2\n13:11:00   4.65    480    17.7 +/- 0.2 17.1 +/- 0.3\n13:27:16   4.93    480    17.7 +/- 0.2  --**\n13:44:50   5.22    600    17.7 +/- 0.2  17.3 +/- 0.3\n------------------------------------------------------------------------\nTmid-T0: Elapsed time after the burst (hours)\nT-EXP: Total Exposure time (seconds)\n* 2MASS Ks error for the reference star is not given, and thus it is\nnot included in our error estimates for the GRB afterglow,\n** Photometry was not possible.",
  "circularId": 16167,
  "createdOn": 1398347090000,
  "email": "arai@nhao.jp",
  "subject": "GRB 140423A: Nishi-Harima NIR Observations",
  "submitter": "Akira Arai at Nishi-Harima Astro. Obs/U of Hyogo  <arai@nhao.jp>",
  "eventId": "GRB 140423A"
}