TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2111 SUBJECT: GRB 030329 Optical observations DATE: 03/04/07 14:15:17 GMT FROM: Evgeni Semkov at Inst.of Astronomy,Bulgaria E. Semkov (Institute of Astronomy, Sofia, Bulgaria) report: The afterglow of the HETE burst (H2652) GRB 030329 (Peterson & Price, GCN 1985; Torii: GCN 1986) was observed with the 50/70 cm Schmidt telescope of the National Observatory Rozhen (Bulgaria) on 2, 3 and 3 April, Rc filter, 5 x 300 sec coo-added exposures. The observations were carried out under good seeing conditions. Using field photometry of Henden (GCN2082) we estimate the brightness of the optical afterglow in Rc band as follows. 2.04 (UT 21.3) R=17.66 +/-0.09 3.04 (UT 20.2) R=17.73 +/-0.11 4.04 (UT 19.5) R=18.11 +/-0.18 This message may be cited.