{
  "bibcode": "2008GCN..8099....1G",
  "body": "C. Guidorzi (INAF-OAB), D. Bersier (LJMU) and N. Tanvir (U. Leicester)\nreport on behalf of a larger collaboration:\n\nWe observed GRB 080810 (Page et al. GCN Circ. 8080) with the 2 m Liverpool\nand Faulkes North telescopes starting on August 11 (23:34:09 UT) and\n12 (13:14:49 UT), respectively, with r' and i' filters.\nWe clearly detect the afterglow with the following magnitudes:\n\nTelescope   Filter  T_mid[hr]   Exposure[s]      Mag\n-------------------------------------------------------------\nLT          i'        34.657       6x300       20.01 � 0.06\nLT          r'        39.525       6x300       20.78 � 0.05\nFTN         i'        48.367       5x300       20.38 � 0.04\n-------------------------------------------------------------\n\nThe calibration was performed using nearby USNOB1 stars as described\nin our previous report (Guidorzi et al. GCN Circ. 8093).\nCombining with our previous observation, we derive a power-law index\nof 0.94 � 0.05 from 15 to 48 hr post burst, thus confirming the\nflattening of the optical decay, in agreement with Galeev et al.\n(GCN Circ. 8098).",
  "circularId": 8099,
  "createdOn": 1218555128000,
  "email": "cristiano.guidorzi@brera.inaf.it",
  "subject": "GRB 080810: Liverpool and Faulkes North observations",
  "submitter": "Cristiano Guidorzi at INAF-OAB  <cristiano.guidorzi@brera.inaf.it>",
  "eventId": "GRB 080810"
}