TITLE: GCN CIRCULAR NUMBER: 12615 SUBJECT: GRB 111123A: optical upper limit in CrAO: correction to the GCN circ. 12613 DATE: 11/12/04 16:57:12 GMT FROM: Alexei Pozanenko at IKI, Moscow The text of the GCN circular #12613 should be corrected as following. I apologize for possible inconvenience. V. Rumyantsev, (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 111123A (Stamatikos et al. GCN 12587) with Shajn telescope of CrAO observatory on Nov. 25 between (UT) 02:48 and 03:44 under a mean seeing of 2.0 arsces and large airmass. We took several frames with exposure of 60 s in I-band. Within enhanced Swift-XRT position (Goad et al. GCN 12590) we do not detected the optical counterpart (Xu et al., GCN 12589; Fugazza et al., GCN 12593). A photometry is based on the USNO B1.0 star 0693-0243552 (10 19 20.57, -20 39 18.7, J2000) assuming I=16.85. T_start UT T0+ Filter, Exposure, OT, uplim (3 sigma) (mid, d) (s) 02:48:33 1.89584 I 49x60 n/d 22.2