{
  "bibcode": "2010GCN.11174....1U",
  "body": "Adria C. Updike, Dieter H. Hartmann (Clemson University) and William Keel,\nErin Darnell (U Alabama) report:\n\nWe observed the field of GRB 100901A (Immler et al., GCN 11159) with the\n0.9m SARA-North telescope located at KPNO beginning 18 hours and 45\nminutes after the trigger under good conditions.  In 240s exposures, we\nclearly detect the afterglow in all images.\n\nFilter    Mag     Mag error    UT Start\n---------------------------------------\nB         18.7    0.1          08:20\nV         18.2    0.1          08:24\nR         18.0    0.1          08:28\nI         17.9    0.1          08:32\n\nMagnitudes are reported relative to the USNO B1.0 and NOMAD catalogs field\nstars. Observations in all bands continued for 4 hours.  Further\nobservations are planned.",
  "circularId": 11174,
  "createdOn": 1283430483000,
  "email": "aupdike@clemson.edu",
  "subject": "GRB 100901A: SARA-N observations",
  "submitter": "Adria C. Updike at Clemson U  <aupdike@clemson.edu>",
  "eventId": "GRB 100901A"
}