{
  "bibcode": "2003GCN..1958....1R",
  "body": "E. S. Rykoff and D. A. Smith on behalf of the ROTSE collaboration report:\n\nWe have observed the full error box of GRB 030324 (HETE trigger 2641) using\nthe ROTSE-3B 0.45 meter telescope at McDonald Observatory, Texas, starting\nMarch 24, 4:27 UT (1.24 hours after the burst).  Sixty one-minute unfiltered\nexposures were taken, with limiting magnitudes between 18.1 and 18.5 calibrated\nagainst USNO A2.0 R-band.  We co-added the frames in sets of 20 to achieve\nlimiting magnitudes of ~ 19.6.\n\nOf the sources detected within the 7' error radius from the position reported\nin GCN 1954 (Donaghy, et. al.), most could be associated\nwith stars in the USNO catalog.  None of the others was found to vary over the\nhour of observations.  Visual comparison between DSS-2 (R-band) and\nseveral ROTSE images reveal no counterpart candidates.  We have also compared\nthe first co-added frame to a co-added follow-up sequence taken the following\nnight (23 hours after the burst).  Visual inspection reveals each ROTSE-III\nsource visible on March 24 is still visible on March 25.",
  "circularId": 1958,
  "createdOn": 1048633281000,
  "email": "erykoff@umich.edu",
  "subject": "GRB030324, Optical Observations",
  "submitter": "Eli Rykoff at Univ. of Michigan/ROTSE  <erykoff@umich.edu>",
  "eventId": "GRB 030324"
}