{
  "bibcode": "2011GCN.12198....1M",
  "body": "A. Melandri (INAF-OAB), D. Bersier  and R. Smith (Liverpool JMU)  \nreport on behalf of a large collaboration:\n\nThe 2-m Liverpool Telescope robotically followed up GRB110726A (SWIFT  \ntrigger 458059; Wolf et al. GCN 12196) starting 190 seconds after the  \nGRB trigger time. Initial RINGO2 polarimeter frames detected no  \ncandidate optical transient. Switching to broad band imaging, we do  \ndetect an uncatalogued source inside the XRT error circle, consistent  \nwih the proposed optical counterpart of Schaefer et al. (GCN Circ.  \n12197), in all three SDSS-gri filters. Our preliminary photometry gives:\n\nMid time from    Total Exp   Filter    Magnitude\ntrigger (min)    (s)\n------------------------------------------------\n14.7              10        R      19.0 +/- 0.1\n30.0              60        R      19.6 +/- 0.1\n\n20.1              30        I      18.6 +/- 0.1\n33.0              60        I      19.1 +/- 0.1\n------------------------------------------------\n\nThe observed decay is rather shallow (power law index ~0.4) for the  \nnext 45 minutes, unlike the initial behavior observed by ROTSE.\n\nMagnitudes have been calibrated from the nearby USNOB-1 stars.  \nObservations still ongoing.",
  "circularId": 12198,
  "createdOn": 1311651461000,
  "email": "axm@astro.livjm.ac.uk",
  "subject": "GRB 110726A: Liverpool Telescope observations",
  "submitter": "Andrea Melandri at Liverpool John Moores U  <axm@astro.livjm.ac.uk>",
  "eventId": "GRB 110726A"
}