{
  "bibcode": "2006GCN..4784....1M",
  "body": "N. Mirabal (U. Michigan) reports on behalf of the MDM Observatory GRB \nfollow-up team:\n\n\"I observed the candidate optical afterglow of Swift GRB 060218 detected\nby the Swift UVOT (Cusumano et al. GCN #4775, Marshall et al. GCN #4779, \nQuimby et al. GCN #4782) with the MDM 2.4m telescope and RETROCAM imager \nunder partly cloudy conditions. Calibration with SDSS pre-burst \nobservations (Cool et al. GCN #4777) yields r = 17.55 +/- 0.1 on Feb. \n19.1438 UT for the OT. This is brighter than the pre-burst observations \nand confirms it as the OT of GRB 060218.\"",
  "circularId": 4784,
  "createdOn": 1140323193000,
  "email": "mirabal@umich.edu",
  "subject": "GRB 060218: MDM Observations",
  "submitter": "Nestor Mirabal at U Michigan  <mirabal@umich.edu>",
  "eventId": "GRB 060218"
}