TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1935 SUBJECT: GRB 030226 Optical observations DATE: 03/03/08 21:13:31 GMT FROM: Evgeni Semkov at Inst.of Astronomy,Bulgaria E. Semkov (Institute of Astronomy, Sofia, Bulgaria) report: The afterglow of the HETE burst (H10893) GRB 030226 (Fox et al., GCN 1879; Price et al., GCN 1880) was observed with the 2m RCC telescope of the National Observatory Rozhen (Bulgaria) on 26 and 27 February, R band, 3 x 300 sec coo-added exposures. We used A and B stars from Garnavich et al. (GCN 1885) as a references. We estimate the brightness of the optical afterglow in R band as follows. 26 (UT 22.2) R=20.27 +/-0.1 27 (UT 01.2) R=20.4 +/-0.15 27 (UT 21.3) R=21.3 +/-0.3 This message may be cited. [GCN OPS NOTE (08Mar03): This Circular was received 15:44 UT 06 Mar 03. It was delayed due to an invalid address. This has been happening more frequently lately. I remind people that if you change your email address, you need to communicate it to me so that the Circular list can be updated.]