{
  "bibcode": "2010GCN.10329....1J",
  "body": "Martin Jelinek (IAA CSIC Granada), Petr Kubanek (IPL Valencia)\nand Javier Gorosabel, Antonio J. Delgado (IAA CSIC) on behalf\nof a larger colaboration.\n\nreport:\n\nWe observed the Swift-XRT errorbox of the GRB100115A (Margutti\net al. GCN 10326) with the 2.56 Nordic Optical Telescope at La\nPalma. We acquired 7x 300s i' band exposure at about 32 hours\nafter the GRB. The detection limit of this image is about i' =\n24.0 mag.\n\nWe detect four sources within or at the border of the X-ray\nerrorbox. None of these objects is present in the SDSS DR7\nimage, with the exception of A, which could be believed to be\nat the its very detection limit. This object also seems in our\nimage extended and/or composed of two components.\n\nGiven the lack of astrometric information in the Updike et al.\n(GCN 10328) we cannot confirm or decide whether one of these\nobjects is an optical afterglow of GRB100115A. We however do\nnot see any object as bright as previously reported, which\nmight confirm the decaying behaviour of the afterglow\ncandidate by SARA.\n\nThe identification card with the objects marked A, B and C\ncan be downloaded from\nhttp://www.iaa.es/mates/grb100115a-not-errorbox.jpg\n\nThis message may be cited.",
  "circularId": 10329,
  "createdOn": 1263691635000,
  "email": "mates@iaa.es",
  "subject": "NOT observation of GRB100115A localization",
  "submitter": "Martin Jelinek at Inst.Astrophys.Andalucia,Granada  <mates@iaa.es>",
  "eventId": "GRB 100115A"
}