TITLE: GCN CIRCULAR NUMBER: 8608 SUBJECT: GRB 081203B: optical observations DATE: 08/12/04 04:13:20 GMT FROM: Alexei Pozanenko at IKI, Moscow M. Andreev, A. Sergeev, (Terskol Branch of Institute of Astronomy), Ju. Babina (CrAO) A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report: We observed the field of GRB 081203B detected by SWIFT in a slew mode (Copeteet al, GCN 8600) with the Z-600 telescope of Mt. Terskol observatory. A set of R-band exposures was taken starting Dec. 04 (UT) 01:44. In a combined image of 10x90 s taken at mid time Dec. 04 (UT) 01:53:45 we detect afterglow (Schady et al, GCN 8606) in coordinate (J2000) 15 15 11.66 +44 25 42.7. A preliminary photometry of the afterglow at Dec. 04 (UT) 01:53:45 is R=19.8. The photometry is based on USNO-A2.0 field stars. The combine image can be found at http://grb.rssi.ru/GRB081203B/grb081203B_Z600_01_53_45.jpg