{
  "bibcode": "2006GCN..4790....1D",
  "body": "A. de Ugarte Postigo, A. J. Castro-Tirado,\nS. B. Pandey (IAA-CSIC, Granada), D. Barrado-\nNavascu�s, A. Bayo, B. Montesinos (LAEFF-INTA, Madrid),\nK. Mishra (ARIES, Nainital),and S. Dehaes\n(Inst. voor Sterrenkunde, K.U. Leuven), on\nbehalf of a larger collaboration report:\n\n\"Following the detection by SWIFT of \"GRB\" 060218\n(Cusumano et al. GCN Circ. 4770, Gehrels et al.\nGCN Circ. 4787) we have obtained UBVRIJHK images\nwith the 1.2m Mercator (+MEROPE) and 3.5m TNG (+NICS)\ntelescopes at La Palma (Canary Islands), starting on\nFeb 19.85 UT (i.e. 40.8 hr after the event).\nWe detect a near-IR counterpart to the hard energy\nsource on a stacked 150s image in the K'-band with\nK about 17 (with respect to 2MASS catalogue).\nAstrometry against USNO-A2.0 yields RA(2000) =\n03 21 39.71, Dec(2000) = +16 52 02.1 (+/-0.5\").\nThis position is fully consistent with the optical\ncounterpart proposed by Cusumano et al. (op. cit.)\nand Marshall et al. (GCN Circ. 4779) and with the\nfaint object reported by Mirabal (GCN Circ. 4783)\non the SDSS archival data (Cool et al. GCN Circ.\n4777). However, we do not find evidence of underlying\nextended emission in our K'-band frame (0\".7 seeing).\nTogether with the fact that the colour index of the\nsource is J-K = 0, unlike GRB afterglow colours\n(see fig. 2 of Gorosabel et al. 2002, A&A 384, 11),\nit clearly favours a high-energy transient in our\nGalaxy.\"\n\nThis Circular might be cited.\n\n[GCN OPS NOTE(20feb06): Per author's request, A. Bayo\nwas added to the author list.]",
  "circularId": 4790,
  "createdOn": 1140400786000,
  "email": "ajct@iaa.es",
  "subject": "GRB 060218: optical/nIR observations at La Palma",
  "submitter": "Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct@iaa.es>",
  "eventId": "GRB 060218"
}