{
  "bibcode": "2012GCN.13373....1R",
  "body": "V. Rumyantsev, K. Antonyuk (CrAO), A. Pozanenko (IKI) report on behalf of \nlarger GRB follow-up collaboration:\n\nWe observed the field of Swift trigger 524642 with AZT-11 telescope of CrAO\nobservatory starting on June 18  (UT) 20:23:03 under favorable weather\nconditions and  seeing  of about 2.4 arsces.  At the edge of the Swift-XRT\nlocalization (+19h 10m 22.39s -05d 47' 55.3\" GRB_ERROR=5.2\") we found bright\noptical source which is absent on any DSS2 plates.  The coordinates of the\nsource (J2000) 19 10 22.78 -05 47 56.4 is 5.9\" away from the center of the\nXRT localization and coincide with UVOT position reported in GCN/SWIFT\nNOTICE.\n\nPhotometry of the source is based on  the  USNO-B1.0 star 0842-0520198 (19\n10 23.32 -05 46 52.8)  assuming R=14.70:\n\nT0+        Filter,  Exposure, OT,                       uplim (3 sigma)\n(mid, d)             (s)\n\n0.0666       R    13x180     16.033 +/- 0.005    21.7\n\nThe finding chart can be found at\nhttp://grb.rssi.ru/Swift_524642/Swift_524642_20120618_R_AZT11.PNG",
  "circularId": 13373,
  "createdOn": 1340289585000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "Swift trigger 524642 / SwJ1910.2-0546",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>"
}