{
  "bibcode": "2000GCN...744....1Y",
  "body": "S. Yost, F. Harrison and A. Burgasser (Caltech) report on behalf of a\nlarger collaboration:\n\n\"We imaged the entire error box of GRB000630 (Hurley, GCN 736) with the\nCCD 13 instrument of the Palomar 60\". Exposures consisted of R-band 4X900\nseconds on the half of the error box containing the positions of Bertolini\net. al.'s optical candidate (GCN 737) and Berger & Frail's radio source\n(GCN 738), and 2X900 seconds on the other half, on July 1.23 UT. The\nseeing was approximately 0.9\". Preliminary analysis reveals no objects at\neither the optical or the radio candidate positions, to an approximate\nlimiting magnitude of R ~ 22.5. We will report a more precise limit\nafter further calibration of the field.\"\n\nThis message may be cited.",
  "circularId": 744,
  "createdOn": 962503893000,
  "email": "yost@srl.caltech.edu",
  "subject": "GRB000630, optical observations",
  "submitter": "Sarah Yost at Caltech  <yost@srl.caltech.edu>",
  "eventId": "GRB 000630"
}