{
  "bibcode": "2017GCN.21113....1H",
  "body": "Veli-Pekka Hentunen and Markku Nissinen (Taurus Hill Observatory (A95),\nVarkaus, Finland) report:\n\nWe have detected GRB 170519A optical afterglow at iTelescope observatory\nT11 (Mayhill, New Mexico) using 0.51-m/6.8 Planewave CDK telescope and\nFLI ProLine PL11002M CCD camera. The observations were started at\n2017-05-19 05:25:24 (UT). Eleven unfiltered images and seven photometric\nR filter images with 120 sec exposure time were taken.\n\nThe optical afterglow was detected at the position RA 10:53:42.46\nand DEC +25:22:27.4.\n\nThe following magnitudes were obtained from the observations using\nNOMAD1  1153-0183949 (R = 12.650) as a comparison star:\n\nTmid(s)+T0    Filter          Exp. time     Mag                 Mag err.\n1119              unfiltered    3x120         15.52CR           0.03\n1452              unfiltered    2x120         15.63CR           0.03\n1906              R               3x120         15.98R              0.10\n2324              R               2x120         16.08R              0.11\n2806              unfiltered    4x120         16.07CR           0.05\n3327              unfiltered    2x120         16.17CR           0.05\n3795              R               2x120         16.50R              0.16\n\n\n---\nThis email has been checked for viruses by Avast antivirus software.\nhttps://www.avast.com/antivirus",
  "circularId": 21113,
  "createdOn": 1495208577000,
  "email": "veli-pekka.hentunen@kassiopeia.net",
  "subject": "GRB 170519A: iTelescope T11 optical observations",
  "submitter": "Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen@kassiopeia.net>",
  "eventId": "GRB 170519A"
}