{
  "bibcode": "2013GCN.14381....1D",
  "body": "P. D'Avanzo, A. Melandri (INAF/OAB), Avet Harutyunyan, G. Mainella\n(INAF/TNG) report on behalf of the CIBO collaboration:\n\nWe observed the field of GRB 130418A (De Pasquale et al., GCN 14377) with\nthe TNG telescope located in the Canary Islands. We obtained a set of\nimages with the DOLORES camera in the B, V, R and I bands, starting on\n2013 Apr 18 at 23:01:02 UT (4.0 hours after the GRB).\n\nThe optical afterglow (De Pasquale et al. GCN 14377; Gorosabel et al. GCN\n14378; Quadri et al. 14379) is clearly detected in all bands. The measured\nR-band magnitude is 18.1 (at t-t0=4.06 h; calibrated against the USNOB1\ncatalogue).\n\n\nWe acknowledge support from the TNG visiting astronomer F. Borsa.",
  "circularId": 14381,
  "createdOn": 1366328734000,
  "email": "paolo.davanzo@brera.inaf.it",
  "subject": "GRB 130418A: TNG optical observations",
  "submitter": "Paolo D'Avanzo at INAF-OAB  <paolo.davanzo@brera.inaf.it>",
  "eventId": "GRB 130418A"
}