{
  "bibcode": "2012GCN.13966....1C",
  "body": "R. Chornock, E. Berger, W. Fong, D. Milisavljevic, and M. Drout \n(Harvard) report:\n\nWe observed the error circle of Swift trigger number 538575 with IMACS \non the Magellan/Baade 6.5-m telescope starting on 2012 November 16.137 \nUT (50 min after the trigger).  In a single 180-sec r-band image we do \nnot detect any new sources in comparison with the DSS to the depth of \nthe survey image.  Additional analysis is in progress.",
  "circularId": 13966,
  "createdOn": 1353037629000,
  "email": "rchornock@cfa.harvard.edu",
  "subject": "Swift trigger 538575: Magellan Observations",
  "submitter": "Ryan Chornock at Harvard  <rchornock@cfa.harvard.edu>"
}