{
  "bibcode": "2015GCN.18503....1H",
  "body": "Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill\nObservatory, Varkaus, Finland) report:\n\nWe have detected GRB 151027A optical afterglow at Taurus Hill Observatory\n(A95) using Meade 16\" ACF 0.40-m/8.0  telescope and SBIG ST-8XME CCD.\nThe observations were started at 2015-10-27 17:11:39 (UT). Eight photometric\nR filter and eight photometric V filter images with 300 sec exposure time were\ntaken.\n\nThe afterglow was detected at the following position RA 18:09:56.72 and\nDEC +61:21:13.2.\n\nThe following magnitudes were obtained from the observations using\nNOMAD1 1512-0243178 (R=13.200 and V=13.670) as a comparison star:\n\nTmid(h)+T0    Filter      Exp. time         Mag          Mag. Err.\n13.393              R          4x300s              17.06      0.12\n13.747              V          4x300s              17.56      0.25\n14.103              R          4x300s              17.06      0.09\n14.457              V          4x300s              17.49      0.10\n\n\n---\nThis email has been checked for viruses by Avast antivirus software.\nhttps://www.avast.com/antivirus",
  "circularId": 18503,
  "createdOn": 1446000898000,
  "email": "veli-pekka.hentunen@kassiopeia.net",
  "subject": "GRB 151027A: THO optical observations",
  "submitter": "Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen@kassiopeia.net>",
  "eventId": "GRB 151027A"
}