TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2030
SUBJECT: GRB030329: R and B observations
DATE:    03/03/30 20:31:08 GMT
FROM:    Adriano Guarnieri at O.A.di Bologna  <adriano@astbo3.bo.astro.it>

C. Bartolini, A. Guarnieri, A. Piccioni (Bologna University), 
G. Gavazzi (Milano-Bicocca University), R. Gualandi (Bologna 
Astronomical Observatory), G. Pizzichini and P. Ferrero 
(IASF-CNR, Bologna) report:

By a preliminary reduction of four frames of our CCD UBVRI 
photometry of GRB030329 (GCN n.2003), performed with the 152 cm 
Loiano telescope, we obtain:


   mid exp.      filter     exposure time         mag  
     UT                       (seconds)    
   
Mar 29.7823        R            300           14.29 +/-.10
Mar 29.8556        R            180           14.55 +/-.03

Mar 29.7957        B            900           15.16 +/-.03
Mar 29.8493        B            300           15.38 +/-.03
 
Magnitude values were referred to star A (Martini et al, GCN 
2012) as calibrated by Burenin et al. (GCN 2024). The 
uncertainties have the meaning of internal errors. 



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