{
  "bibcode": "2014GCN.16148....1E",
  "body": "L. Elenin (KIAM),  A. Volnova (IKI), I. Molotov (KIAM), A. Pozanenko (IKI) \nreport on behalf of larger GRB  follow-up collaboration:\n\nAfter detection of the optical afterglow of GRB 140423A (Elenin et al., GCN \n16143; Kaur et al., GCN 16144; Ferrante et al., GCN 16145) and X-ray \nafterglow (Burrows et al., GCN 16146)   we report initial photometry of our \nfirst images taken with ISON-NM observatory:\n\nUT start   t-T0              Exp.  Filter   OT\n              (mid.,days)    (s)\n09:01:18  0.02043        30     Clear   17.11 +/- 0.17\n09:06:49  0.02426        30     Clear   17.60 +/- 0.21\n\nThe photometry is based on star SDSS J130858.37+494547.9 (assuming R = \n15.418 +/- 0.018).\n\nThe finding chart of GRB 140423A afterglow can be found in \nhttp://grb.rssi.ru/GRB140423A/GRB140423A_ISON-NM_fc.png\n\nAlso we report the corect time of observation of the first image in GCN \n16143. It  should be April, 23,  (UT)  09:01:03.\nWe apologize for the misprint.",
  "circularId": 16148,
  "createdOn": 1398250908000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 140423A:  ISON-MN early photometry and correction to the GCN circ. 16143",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 140423A"
}