{
  "bibcode": "1998GCN...175....1B",
  "body": "GRB 981220 optical observations\n\nC. Bartolini, S. Bernabei, I. Bruni, A. Guarnieri, A. Piccioni, \nUniversity of Bologna, and N. Masetti and G. Pizzichini,\nITEsre-CNR, Bologna, communicate: \"Four 40 min. R-band and one 40 min.\nI-band CCD frames of the error box of GRB 981220 (Hurley et al., GCN #160)\nwere obtained with the 1.5-m telescope of the University of Bologna from \n1998 December 22.86 UT to 23.02 UT.\nA preliminary analysis of the R band frames shows no variable object\nwithin 0.3 mag. In the I band frame no new evident objects with respect of\nthe Palomar Digitized Sky Survey were observed inside the mentioned error \nbox.\nThe seeing was 3.8\"; the measurable limiting magnitude was R ~ 22 (for the \nsum of the four CCD frames) and I ~ 19.7.\n\n\nThis message may be cited.",
  "circularId": 175,
  "createdOn": 914865114000,
  "email": "adriano@astbo3.bo.astro.it",
  "subject": "GRB 981220 optical R and I observations",
  "submitter": "Adriano Guarnieri at O.A.di Bologna  <adriano@astbo3.bo.astro.it>",
  "eventId": "GRB 981220"
}