{
  "bibcode": "2010GCN.11068....1R",
  "body": "GRB 100807A: ROTSE-III Optical Limits\n\nW. Rujopakarn (Steward), H. Flewelling (IfA/Hawaii), B. E. Schaefer\n(Louisiana State), W. Zheng (U Mich), and S. B. Pandey (U Mich), report on\nbehalf of the ROTSE collaboration:\n\nROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB 100807A\n(Swift trigger 431128; Grupe et al., GCN 11067), producing images beginning\n5.2 s after the GCN notice time. An automated response took the first image\nat 09:13:35.2 UT, 21.6 s after the burst, and during the gamma-ray emission,\nunder fair conditions. We took 10 5-sec and 10 20-sec exposures. These\nunfiltered images are calibrated relative to USNO A2.0 (R). Imaging is on\ngoing.\n\nComparison to the DSS (second epoch) reveals no new sources within the\n3-sigma Swift/BAT error circle or the XRT error circle, for both single\nimages and coadding into sets of 10. Individual images have limiting\nmagnitudes ranging from 15.9-17.2; we set the following specific limits.\n\nstart UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd?\n--------------------------------------------------------------------\n09:13:35.2 09:13:40.2 5 16.2 21.6 N\n09:13:35.2 09:14:42.2 67 16.7 21.6 Y\n09:14:55.2 09:19:37.9 282 18.1 101.6 Y",
  "circularId": 11068,
  "createdOn": 1281174030000,
  "email": "flewelling.heather@gmail.com",
  "subject": "GRB 100807A: ROTSE-III Optical Limits",
  "submitter": "Heather Flewelling at IfA/Hawaii  <flewelling.heather@gmail.com>",
  "eventId": "GRB 100807A"
}