{
  "bibcode": "2010GCN.10715....1U",
  "body": "Adria C. Updike and Dieter H. Hartmann (Clemson University) report:\n\nWe observed the field of GRB 100504A (Mao et al., GCN 10712) using the\n0.6m SARA-South telescope located at CTIO under good conditions and high\nairmass beginning 6 hours and 42 min after the trigger.  We do not detect\na new source at the location of the UVOT-enhanced XRT position (Mao, GCN\n10713) to a limiting magnitude of R = 20 mag (on comparison to the USNO\nB1.0 catalog).  We note that the extinction at this galactic latitude is\nsignificant; E(B-V) = 0.840 mag (Schlegel et al. 1998).",
  "circularId": 10715,
  "createdOn": 1273026696000,
  "email": "aupdike@clemson.edu",
  "subject": "GRB 100504A: SARA-South Upper Limit",
  "submitter": "Adria C. Updike at Clemson U  <aupdike@clemson.edu>",
  "eventId": "GRB 100504A"
}