{
  "bibcode": "2013GCN.14857....1S",
  "body": "M. H. Siegel (PSU) and H. A. Krimm (CRESST/GSFC/USRA)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 130609B\n85 s after the BAT trigger (Krimm et al., GCN Circ. 14841).\nA fading source consistent with the XRT position (Goad et al. GCN Circ.\n14847) is detected in the initial UVOT exposures.\n\nThe preliminary UVOT position is:\n   RA  (J2000) =  03:35:05.11 =  53.77128 (deg.)\n   Dec (J2000) = -40:10:26.7  = -40.17409 (deg.)\nwith an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence).\n\nPreliminary detections and 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first and second orbit\nexposures are: \n\nFilter        T_start(s)   T_stop(s)    Exp(s)      Mag\nwhite (fc)           84          234      147    15.47+-0.02\nwhite               577         1891      283    17.36+-0.03\nwhite              6046         7681      393    18.39+-0.05\nv                   799         1941      136    16.89+-0.09\nv                  6457         6657      196    18.00+-0.15\nb                   552         1866      136    17.32+-0.06\nb                  5841         7476      393    18.46+-0.09\nu (fc)              297          546      245    16.31+-0.04\nu                   700         1841      116    17.15+-0.08\nu                  5636         7271      393    18.15+-0.09\nuvw1                676         1816      136    17.61+-0.12\nuvw1               5432         7067      393    18.75+-0.15\nuvm2                823         1791      116    19.12+-0.35\nuvm2               6662         6861      196    >19.66\nuvw2                603         1916      116    >19.51\nuvw2               6252         7855      362    >20.39\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.01 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 14857,
  "createdOn": 1370882801000,
  "email": "siegel@swift.psu.edu",
  "subject": "GRB 130609B: Swift/UVOT Observations",
  "submitter": "Mike Siegel at PSU/Swift MOC  <siegel@swift.psu.edu>",
  "eventId": "GRB 130609B"
}