{
  "bibcode": "2010GCN.10636....1U",
  "body": "Adria C. Updike, Dieter H. Hartmann (Clemson University), and Chris De\nPree (Agnes Scott College) report:\n\nWe observed the field of GRB 100420A (Baumgartner et al., GCN 10628) using\nthe 0.9m SARA telescope located at KPNO beginning 3 hours and 4 minutes\nafter the BAT trigger.  We obtained 22 minutes of observations in the R\nband followed by 20 minutes in the I band at high airmass.  At the\nlocation of the XRT error circle, we detect no new sources down to a\nlimiting magnitude of R > 19.0, I > 18.5 (as compared to the USNO B1.0\ncatalog).  No further observations are planned.",
  "circularId": 10636,
  "createdOn": 1271795311000,
  "email": "aupdike@clemson.edu",
  "subject": "GRB 100420A: SARA Upper Limits",
  "submitter": "Adria C. Updike at Clemson U  <aupdike@clemson.edu>",
  "eventId": "GRB 100420A"
}