{
  "bibcode": "1999GCN...232....1A",
  "body": "L.A. Antonelli, A. Di Paola, R.Speziali, Osservatorio Astronomico di \nRoma, Italy, and G. Gandolfi, BeppoSAX Scientific Operation Center, \nItaly, report on behalf of SWIRT Team and BeppoSAX Team:\n\n\"We observed the Optical Transient field of GRB 990123 in the J band \nusing the 1.1m AZT-24 telescope and the near-infrared \ncamera/spectrometer SWIRCAM at the Campo Imperatore Astronomical \nObservatory operated by the Astronomical Observatory of Rome (O.A.R.). \n\nOn 25.22 (UT) January 1999, the OT field was observed for a total\nexposure time of 2000 s reaching the limiting magnitude in the\nJ band of 19.5 +/- 0.3 mag . \nOn 26.12 (UT) January 1999 the field was re-observed for a total\nexposure time of 3600 s reaching the limiting magnitude in the\nJ band of 19.3 +/- 0.3 mag. No source has been found in both\nobservations within the errorbox of the O.T. (IAUC 7094). \n\nThese observations provide an upper limit, in the J band, to the \ninfrared counterpart (if any) of GRB 990123 and on its behaviour.\n\nThis message may be cited.\"\n\n\n[GCN OP NOTE (99/01/27 15:10 UT):  Some of you on the GCN Circulars list\nprobably received this Circular twice.  Due to a very low probability\noccurance of e-mail deliver deamons timing, this notice got deposited\nin the \"import\" queue of the Circulars processing deamon twice.]",
  "circularId": 232,
  "createdOn": 917448672000,
  "email": "angelo@quasar.mporzio.astro.it",
  "subject": "GRB 990123: near-infrared observations.",
  "submitter": "Angelo Antonelli at Obs. Astro. di Roma  <angelo@quasar.mporzio.astro.it>",
  "eventId": "GRB 990123"
}