{
  "bibcode": "2011GCN.11907....1O",
  "body": "S. R. Oates (MSSL-UCL) & C. W. Wolf (PSU) report on behalf of the \nSwift-UVOT team\n\nThe Swift/UVOT began settled observations of the field of GRB 110407A 168s\nafter the trigger (Wolf et al., GCN Circ. 11895). We do not detect a \nsource at the position of the X-ray (Evans et al., GCN Circ. 11896, 11903) \nor optical afterglow reported by Lulin (Chuang et al, GCN Circ. 11899, \n11901), NOT (Malesani et al., GCN Circ. 11904) and GROND (Kann et al, GCN \nCirc. 11906).\n\nPreliminary magnitudes using the UVOT photometric system (Poole et al. \n2008,MNRAS, 383, 627) for the finding chart (FC) and summed exposures at the\nlocation of the optical afterglow are:\n\nFilter  T_start(s)  T_stop(s)   Exp(s)       Mag/3sigUL\n#####################################################\nwh (FC)    168        317       147          >20.82\nwh\t   607        6514      580          >21.59\nu (FC)\t   327        577       246          >20.11\nu          732        6104      413          >20.41\nv          658        6873      382          >19.74\nb\t   583        6309      432          >20.75\nuvw1\t   708        5899      413          >20.34\nuvm2\t   5493       5693      197          >19.75\nuvw2       808        6719      413          >20.68\n#####################################################\n\nThe values quoted above are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.03 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 11907,
  "createdOn": 1302264339000,
  "email": "sro@mssl.ucl.ac.uk",
  "subject": "GRB110407A: UVOT Upper Limits",
  "submitter": "Samantha Oates at MSSL  <sro@mssl.ucl.ac.uk>",
  "eventId": "GRB 110407A"
}