{
  "bibcode": "2006GCN..5036....1R",
  "body": "V.Rumyantsev (CrAO), V.Biryukov (SAI, MSU), and A.Pozanenko (IKI) on behalf\nof larger GRB follow up collaboration report:\n\nWe observed the optical afterglow (Price et al. GCN5019; Li et al. GCN5027)\nof Swift GRB060428B (Campana et al. GCN 5017) in the R band with Shajn  2.6m\ntelescope of CrAO between April 28 (UT) 18:43 -- 20:41, i.e. 9.8 -- 11.8 hrs\nafter the burst onset. The afterglow is visible on a combined image of a\ntotal exposure 3240 sec in a tail of the nearby galaxy (Halpern  et al.\nGCN5034) and precise photometry is underway. Based on USNO A2.0 we estimate\nlimiting magnitude of the combined image as R=24.3.\n\nCombined image can be found in\nhttp://grb.rssi.ru/GRB060428/grb060428_ZTSH_R.gif\n\nThe message may be cited.",
  "circularId": 5036,
  "createdOn": 1146330394000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB060428B: optical observation",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 060428B"
}