TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2049 SUBJECT: Photometry of GRB030329 - Constant OT Magnitude DATE: 03/03/31 20:12:58 GMT FROM: Avishay Gal-Yam at Tel Aviv U, Israel Y. Lipkin, E. M. Leibowitz, E. O. Ofek, A. Gal-Yam, H. Mendelson (Wise observatory, TAU) report: We are conducting time-resolved photometry of GRB 030329 (HETE trigger #2652, Ricker et al., GCN 1997) with the TEK 1K CCD mounted on the 1-meter telescope of Wise Observatory, Israel. During 3 hours of observations, starting at March 31 17:00 UT, the OT is constant (to within 0.1 mag), with a mean magnitude of approximately R=16.8, consistent with the findings of Zeh et al (GCN 2048).