{
  "bibcode": "2013GCN.14891....1H",
  "body": "Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill\nObservatory, Varkaus, Finland) report:\n\nWe have detected GRB 130610A optical afterglow at iTelescope observatory\nT21 (Mayhill, New Mexico) 0.43m/6.8 astrograph and FLI-PL6303E CCD\ncamera. Three unfiltered images and three photometric R filter images with \n300 sec exposure time were made.\n\nThe afterglow was detected at following position RA 14:57:40.86 and \nDEC +28:12:26.0\n\nThe following magnitudes were obtained from the observations using \nNOMAD1 1182-0257977 (R=14.110) as the comparison:\n\nTmid(sec)+T0    Filter          Exp. time    Mag              Mag err. \n2442                  unfiltered      300            19.09CR     0.15\n2759                  unfiltered      300            19.34CR     0.19\n3076                  unfiltered      300            19.17CR     0.16\n3717                  R                 300            19.58R        0.32\n4034                  R                 300            19.93R        0.44\n4351                  R                 300            19.93R        0.43",
  "circularId": 14891,
  "createdOn": 1371101202000,
  "email": "veli-pekka.hentunen@kassiopeia.net",
  "subject": "GRB 130610A: iTelescope T21 optical observations",
  "submitter": "Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen@kassiopeia.net>",
  "eventId": "GRB 130610A"
}