TITLE: GCN CIRCULAR NUMBER: 12754 SUBJECT: GRB 111228A: GRAS017 optical observations DATE: 11/12/29 05:24:38 GMT FROM: Veli-Pekka Hentunen at Taurus Hill Obs,A95 Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill Observatory, Varkaus, Finland) report: GRAS 017 (Global-Rent-a-Scope, Nerpio, Spain) CDK17 17" (0.43 m) f/6.8 and FLI ProLine CCD camera were used to detect GRB 111228A optical afterglow 9.0 hours after the burst trigger. The observations were started at 2011-12-29 00:35:06 (UT) and stopped at 2011-12-29 00:58:26 (UT). Nine photometric R observations with 120s exposure times were made. The afterglow was detected at following position RA 10 00 16.07 and DEC +18 17 52.1. The following magnitude was obtained from the observations using USNO-B1 1083-0199853 (R2 = 17.28) as the comparison: Tmid(s)+T0 Filter Exp (sec) Mag Mag err Limit 32522 R 9x120 18.7 0.2 19.8 A png image of our observations is available at the following URL link: http://cutenews.kassiopeia.net/data/upimages/GRB111228A_web.png