{
  "bibcode": "2005GCN..3004....1M",
  "body": "A. Melandri, E. Palazzi, L. A. Antonelli, S. Covino, P. D'Avanzo,\nG. Tagliaferri, G. Chincarini, F. M. Zerbi, G. Tosti, A. Monfardini,\nN. Masetti, L. Nicastro, G. Cutispoto, E. Molinari, M. Rodono'  and\nF. Vitali on behalf of the REM/ROSS team, report:\n\n\"We imaged the field of GRB050128 (Antonelli, et al., GCN 2991) with\nthe 60cm REM robotic telescope located in La Silla (Chile).\nOptical observations were carried out in V, R, I filters starting on \n2005\nJan 28, at 7:10 UT, and ending at 9:45 UT (approximately 3 hours after\nthe burst) . Observations have been partly affected by the presence\nof the bright Moon close to the field, so only frames with short \nexposure\ntime can be used. The field was imaged in each filter for a total \nexposure\ntime of 50s.\n\nNo new sources are detected within the XRT error circle (Antonelli et\nal.  GCN 2991) down to a limiting magnitude of V >18.2, R >18.2 and\nI >17.9.\n\nThe source noted in the H band (Covino, et al., GCN 2999) at RA=\n14:38:18.16, DEC=-34:45:44.7 (J2000) at about 13 arcsec far from the\nXRT position is not visible in the optical bands. We derive a 3-sigma\nupper limit of R > 18.2 at the position of this source.\n\nFurther optical-infrared observations with REM are planned to look for\nany variability.\n\nThis message can be cited.\"",
  "circularId": 3004,
  "createdOn": 1107285292000,
  "email": "a.antonelli@mporzio.astro.it",
  "subject": "GRB 050128 Optical observation with REM",
  "submitter": "Angelo Antonelli at Obs. Astro. di Roma  <a.antonelli@mporzio.astro.it>",
  "eventId": "GRB 050128"
}