{
  "bibcode": "2011GCN.12174....1N",
  "body": "Peter Nelson (Ellinbank, Victoria, Australia) reported to the AAVSO \nInternational High Energy Network the following optical observations of \nGRB 110715A (Sonbas et al., GCN #12158):\n\nP. Nelson (Ellinbank Observatory, Ellinbank, VIC, Australia) reports a \ndetection of GRB 110715A from fifteen frames of 30-seconds exposure each \ntaken with a clear filter through a 0.32-cm PlaneWave f/8 CDK and SBIG \nST8XE camera. The magnitude derived from all frames is m(CR) = 18.0 +/- \n0.2 at the mid-point exposure time of 2011 July 15 14:05:01 UT. \nMagnitudes were measured relative to the USNO-B1.0 comparison star at RA: \n15:50:41.62, Decl: -46:14:25.91 with magnitude R=15.21 (see Piranomonte et \nal., GCN #12164).\n\nNelson reports that time-series was obtained by averaging the 15 frames \ninto three consecutive groups of five frames, yielding the following \nmagnitudes:\n\nTime (UT)\tMag (Clear, R zeropoint)\n13:54:23\t18.01 +/- 0.18\n14:05:28\t17.93 +/- 0.15\n14:15:12\t18.47 +/- 0.25\n\nThe position derived from these images is RA: 15:50:44.07, Decl: \n-46:14:06.5, which is fully consistent with the optical position given by \nKuin et al. (GCN #12162).\n\nThe AAVSO International High Energy Network was made possible through \ngrants from the Charles Curry Foundation and from NASA.",
  "circularId": 12174,
  "createdOn": 1311077806000,
  "email": "matthewt@aavso.org",
  "subject": "GRB 110715A optical observations",
  "submitter": "AAVSO GRB Network at AAVSO  <matthewt@aavso.org>",
  "eventId": "GRB 110715A"
}