{
  "bibcode": "2009GCN..9732....1S",
  "body": "T. Sakamoto (UMBC/GSFC), D. Donato (ORAU/GSFC), N. Gehrels (GSFC),\nT. Okajima (JHU/GSFC), T.N. Ukwatta (GWU/GSFC), Y. Urata (NCU),\nC.A. Wallace (FGCU)\n\nWe observed the field of GRB 090726 detected by Swift\n(trigger #358422; Page et al., GCN Circ. 9706) with the 14-inch\nGoddard Robotic Telescope (GRT) located at the Goddard Geophysical\nand Astronomical Observatory (http://cddisa.gsfc.nasa.gov/ggao/).\n\n89 set of 30 sec exposures were taken in the R filter starting\nfrom July 27 02:31:44 (UT) about 3.75 hours after the trigger and\nstopped on July 27 03:22:10 (UT).  We do not detect the optical\nafterglow (Moskvitin et al., GCN Circ. 9709; Fatkhullin et al.,\nGCN Circ. 9712; Polasek et al., GCN Circ. 9714; Maticic et al.,\nGCN Circ. 9715; Landsman et al., GCN Circ. 9717) both in the\nindividual images and the combined image.  The estimated three\nsigma upper limit of the combined image (total exposure of 2670.0 sec)\nis ~18.9 mag using the USNO-B1 catalog.",
  "circularId": 9732,
  "createdOn": 1248862967000,
  "email": "takanori@milkyway.gsfc.nasa.gov",
  "subject": "GRB 090726: GRT Optical Observation",
  "submitter": "Takanori Sakamoto at NASA/GSFC  <takanori@milkyway.gsfc.nasa.gov>",
  "eventId": "GRB 090726"
}