{
  "bibcode": "2006GCN..5741....1A",
  "body": "I. Asfandyarov,  M. Ibrahimov (MAO),  A. Pozanenko (IKI), on behalf of\nlarger GRB follow up collaboration report:\n\nWe observed  the  error box of GRB060904b (Grupe et al., GCN 5505)  with 1.5\nm telescope of Maidanak Astronomical Observatory (MAO)  on September 4 and\n5. A set of R images were taken under good weaher conditions.  The afterglow\n(Rykoff  et al., GCN 5504; Grupe et al., GCN 5505) is clearly detected in\ncombined images of each epochs. A photometry of the afterglow based on USNO\nA2.0 is following:\n\nMid time (UT), Exposure (s), R_ mag.,     Seeing\n\nSep. 04.999    4x360        21.63 +/-0.18  1.4\"\nSep. 05.993    4x300        22.40 +/-0.30  1.1\"\n\nThe message may be cited",
  "circularId": 5741,
  "createdOn": 1161376934000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB060904b: optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 060904B"
}