{
  "bibcode": "2014GCN.16802....1C",
  "body": "A. Cucchiara (NASA-GSFC),S.B. Cenko (NASA-GSFC), J. Capone (UMD), \nV. Toy (UMD),   E. Troja (NASA-GSFC), A. Kutyrev (NASA-GSFC), S. Veilleux\n(UMD), and S. Gezari (UMD) report on behalf of a larger collaboration:\n\n\"On September 08.37UT (approximately 16.5h after the discovery) we observed \nthe optical counterpart of GRB 140907A (Krimm et al. GCN 16788, Xu et al. \nGCN 16789, Kuin et al. GCN 16791) with the Large Monolithic Imager (LMI) on \nthe 4.3m  Discovery Channel Telescope (DCT) at Happy Jack, AZ. We observed in \ng', r', and i' bands for a total of 6, 6 and 4 minutes respectively.\n\nUsing a set of stars from the APASS catalogue we derived the following \nmagnitude for the afterglow:\n\ng' = 21.54 +- 0.17\nr' = 20.92 +- 0.15\ni' = 20.42 +- 0.16\n\nWe thank the DCT staff, in particular S. Strosahl and H. Larson for \ntheir support in performing these observations.\"",
  "circularId": 16802,
  "createdOn": 1410233180000,
  "email": "antonino.cucchiara@nasa.gov",
  "subject": "GRB 140907A: Discovery Channel Telescope observations",
  "submitter": "Antonino Cucchiara at NASA/GSFC  <antonino.cucchiara@nasa.gov>",
  "eventId": "GRB 140907A"
}