{
  "bibcode": "2005GCN..3124....1S",
  "body": "D. Sharapov, M. Ibrahimov,  R. Karimov, B. Kahharov (UBAI), A.Pozanenko\n(IKI), V.Rumyantsev (CrAO),  G.Beskin (SAO) report:\n\nWe observed afterglow candidate of Swift GRB050319  (Rykoff et al.  GCN\n3116, Krimm et al. GCN 3117)  with 1.5m telescope of Mt.Maidanak\nhigh-altitude observatory. BR-band images  were taken in two sets of\nobservation on (UT) March 19, 17:14 --17:58  and 19:18 -- 21:45.  We confirm\na fading afterglow (Yoshioka et al. GCN 3120). Preliminary  photometry\nagainst of USNO-B1.0 Catalog is following:\n\nMean time  Exposure Filter  Mag.\n(UT)         (s)\n\nMar.19 17:28  900   B  20.85\nMar.19 17:31 1500   R  20.12\nMar.19 20:17 1800   B  21.29\nMar.19 20:16 4800   R  20.17\n\nwith typical magnitude error of less than 0.10.\nB-R at the two epochs marginally indicate color variation which is not\ntypical for this phase of afterglow.\n\nThis message may be cited.",
  "circularId": 3124,
  "createdOn": 1111299432000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB050319: BR optical photometry",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 050319"
}