{
  "bibcode": "2012GCN.13657....1R",
  "body": "Arne Rau and Gottfried Kanbach (both MPE Garching) report on behalf of \nthe OPTIMA-Burst Team:\n\n\"We observed the location of GRB 120816A (Page et al. GCN #13654) with \nOPTIMA-Burst (Kanbach et al. 2008, Astrophys. and Sp. Sci. Lib. Vol. \n351, 153) currently mounted at the 1.3m telescope at Skinakas \nObservatory, University of Crete. Observations started at 19:22:44 UT \n(249 sec after the burst) with unfiltered 20s exposures using the \nfield-viewing CCD camera. Within the updated XRT error circle we find a \nfading source located at:\n\nRA(J2000) = 18:48:34.4\nDec(J2000) = -06:56:16\n\nwith an approximate uncertainty of 1\" in both coordinates.\n\nWe measure the following magnitudes:\n\nT0+         white\n--------------\n249s        ~17.8\n4844s    >19.1\n\ncalibrated against the R=15.2mag reference star USNO-B1.0 0830-0537586.\"",
  "circularId": 13657,
  "createdOn": 1345153186000,
  "email": "arau@mpe.mpg.de",
  "subject": "GRB120816A: OPTIMA discovery of optical counterpart",
  "submitter": "Arne Rau at MPE  <arau@mpe.mpg.de>",
  "eventId": "GRB 120816A"
}