{
  "bibcode": "2002GCN..1738....1W",
  "body": "W. M. Wood-Vasey, Lawrence Berkeley National Laboratory, using images\nobtained by R. Bambery, S. Pravdo, M. Hicks, and K. Lawrence\n(Near-Earth Asteroid Tracking project, Jet Propulsion Laboratory),\nreports upper limits for previous observations at the location of the\nobject identified by Fox et al. (GCN 1731) as the optical counterpart\nto GRB 20021211 from unfiltered observations with the 1.2m MSSS\ntelescope at Haleakala and the Oschin 48\" telescope at Palomar\nObservatory (the same instrument as used by Fox et al.).\n\nA co-addition of Haleakala images from 5 January, 11 January, \n16 January, 1 December (all dates 2002 UT) shows no source visible at\nthis location to a limiting unfiltered magnitude of 21.6 (calibrated\nto USNO R-band stars on the image frame) at a S/N of 3.\n\nPalomar images from 9 December 2002, taken under non-ideal conditions, \nshow no source visible at this location to a limiting unfiltered \nmagnitude of 18.4 (calibrated to USNO R-band stars on the image frame) \nat a S/N of 3.\n\nThe Haleakala co-added image is available at \n\nhttp://supernova.lbl.gov/~wwoodvas/GRB/#GRB20021201\n\nThis message may be cited.",
  "circularId": 1738,
  "createdOn": 1039654148000,
  "email": "wmwood-vasey@lbl.gov",
  "subject": "GRB021211 - Upper limits from recent and historical observations",
  "submitter": "Michael Wood-Vasey at UC Berkeley/LBNL/SNfactory  <wmwood-vasey@lbl.gov>",
  "eventId": "GRB 021211"
}