{
  "bibcode": "2011GCN.12615....1R",
  "body": "The text of the GCN circular  #12613 should be corrected as following. I \napologize for possible inconvenience.\n\nV. Rumyantsev, (CrAO), A. Pozanenko (IKI)  report on behalf of larger GRB \nfollow-up collaboration:\n\nWe observed the field of GRB 111123A (Stamatikos et al. GCN 12587) with\nShajn telescope of CrAO observatory on Nov. 25 between (UT) 02:48 and 03:44\nunder a mean seeing of 2.0 arsces and large airmass. We took several frames\nwith exposure of 60 s in I-band. Within enhanced Swift-XRT position (Goad et\nal. GCN 12590) we do not detected the optical counterpart (Xu et al., GCN\n12589; Fugazza et al., GCN 12593). A photometry is based on the USNO B1.0\nstar 0693-0243552 (10 19 20.57, -20 39 18.7, J2000) assuming I=16.85.\n\nT_start UT  T0+        Filter, Exposure, OT,  uplim (3 sigma)\n                  (mid, d)            (s)\n02:48:33     1.89584   I       49x60      n/d    22.2",
  "circularId": 12615,
  "createdOn": 1323017832000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 111123A: optical upper limit in CrAO: correction to the GCN circ. 12613",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 111123A"
}