{
  "bibcode": "2015GCN.17461....1F",
  "body": "F. V. Ferrante (SMU), T. Guver (Istanbul U), G. Dhungana (SMU), R. Staten (SMU)\n\nand R. Kehoe (SMU) report on behalf of the ROTSE GRB team:\n\nThe 0.45-m ROTSE-IIIb telescope, located at McDonald Observatory, Texas,\n\nresponded to GRB 150211A (Swift trigger 630714; Starling, et al.,GCN 17434) with\n\nimaging beginning 3.8 s after the GCN notice time. An automated response recorded\n\nthe first image at 11:52:43.8 UT, 30.7 s after the burst, under fair observing conditions.\n\nThe unfiltered images are calibrated relative to USNO A2.0 (R). We do not detect an\n\noptical source within the refined Swift-XRT error circle (Starling et al., GCN 17442).\n\nWe set the following upper limit:\n\n\nstart UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?\n-----------------------------------------------------------------------------------------------\n11:52:43.8   11:53:43.8      60       17.6           30.7               N",
  "circularId": 17461,
  "createdOn": 1423781360000,
  "email": "fferrante@smu.edu",
  "subject": "GRB 150211A: ROTSE-III Upper Optical Limit",
  "submitter": "Farley V. Ferrante at Southern Methodist U/ROTSE  <fferrante@smu.edu>",
  "eventId": "GRB 150211A"
}