{
  "bibcode": "2006GCN..5796....1S",
  "body": "B. E. Schaefer (Louisiana State), E.S. Rykoff (U Mich), F. Yuan (U Mich), \nW. Rujopakarn (U Arizona), report on behalf of the ROTSE collaboration:\n\nROTSE-IIIa, located at Siding Spring Observatory, Australia, responded to \nGRB 061110A (Swift trigger 238108), producing images beginning 8.8 s after \nthe GCN notice time. An automated response took the first image at \n11:48:04.9 UT, 43.6 s after the burst, under fair conditions. We took 10 \n5-sec, 10 20-sec and 10 60-sec eposures. These unfiltered images are \ncalibrated relative to USNO A2.0 (R).\n\nComparison to the DSS (second epoch) reveals no new sources within the\n3-sigma BAT error circle and also within the XRT error circle, for both\nsingle images and coadding into sets of 10;  the field is not crowded.\nIndividual images have limiting magnitudes ranging from 14.3-17.1; we set\nthe following specific limits.\n\nstart UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?\n--------------------------------------------------------------------\n11:48:04.9   11:48:09.9         5     16.2           43.6       N\n12:07:54.0   12:17:13.9       559     17.5         1232.7       Y",
  "circularId": 5796,
  "createdOn": 1163162236000,
  "email": "schaefer@grb.phys.lsu.edu",
  "subject": "GRB 061110: ROTSE-III Optical Limits",
  "submitter": "Brad Schaefer at LSU  <schaefer@grb.phys.lsu.edu>",
  "eventId": "GRB 061110"
}