{
  "bibcode": "1999GCN...332....1M",
  "body": "G. Marconi and G.L. Israel (Observ. of Rome, Italy), D. Lazzati, S. Covino \nand G. Ghisellini (Observ. of Brera, Milan, Italy) report:\n\nA 40 min exposure taken at ESO-NTT-SUSI2 1999, May 17.1066, with a \nseeing of 1.2\" shows the OT of GRB990510 at the magnitude R=23.4+-0.1\n(assuming R=16.5 for the USNO star at RA = 13:38:00.82, DEC=-80:29:11.7).\nA 50 min exposure taken on May 18.1306 (1\" seeing) shows the OT at  \nR=23.7+\\-0.1.\nNo obvious candidate host galaxy can be seen.\nThe NTT images are posted at: \n      http://www.merate.mi.astro.it/~gabriele/990510/ \n\nThis message is citeable.",
  "circularId": 332,
  "createdOn": 927065454000,
  "email": "gabriele@merate.mi.astro.it",
  "subject": "GRB 990510: optical observations",
  "submitter": "Gabriele Ghisellini at Obs.Astro. di Brera  <gabriele@merate.mi.astro.it>",
  "eventId": "GRB 990510"
}