{
  "bibcode": "2002GCN..1735....1N",
  "body": "M. Nysewander, D. Reichart (U. North Carolina) and M. Schwartz\n(Tenagra Observatories) report:\n\n\nWe imaged 100% of the error box of GRB 021204 with the 32-inch Tenagra II\ntelescope beginning at 07:58:37 UT on Dec 5 and 08:07:35 UT on Dec 6, 0.7\nand 1.7 days after the burst.  For both epochs we integrated in the Ic band\nfor 600s in eight pointings.  We note that the Galactic extinction along\nthis line of sight is approximately A_Ic = 0.9 mag (Schlegel et al. 1998).\n\nUsing the image subtraction software ISIS2 (Alard 2000), we find no\ntransient to the limiting magnitude of our first epoch images, which we\nestimate to be Ic = 21.3 (3 sigma) using 5 USNO-A2.0 stars.\n\nAlard, C., 2000, A&AS 114, 363\nSchlegel, D., et al. 1998, ApJ, 500, 525",
  "circularId": 1735,
  "createdOn": 1039624894000,
  "email": "mnysewan@physics.unc.edu",
  "subject": "GRB 021204: I-band Observations",
  "submitter": "Melissa Nysewander at UNC,Chapel Hill  <mnysewan@physics.unc.edu>",
  "eventId": "GRB 021204"
}