TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2191
SUBJECT: GRB 030329,  BVRI photometry
DATE:    03/05/02 01:07:12 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

 M.A. Ibrahimov, I.M. Asfandiyarov, B.B. Kahharov (UBAI), A.Pozanenko (IKI),
V.Rumyantsev (CrAO), G.Beskin (SAO)  on behalf of large collaboration
report:

We have observed the OT GRB030329 found by B.Peterson and P.Price (GCN 1985)
ÃÛÅÒ 1.5m telescope of Mt.Maidanak High-altitude Observatory  (UBAI).
Several BVRI Bessel images were obtained on April  20, 25 and 27. The seeing
on Apr.25 was in range of 1-1.5 arcsec, and on Apr.27 is less than 1 arcsec
for all filters.  Based on filed photometry  by A. Henden (GCN 2082) we
estimate the OT magnitudes:

Mid time  exposure filter mag    err
UT, Apr.  sec

20.664   1200     B     21.09  0.10
20.648   1200     R     19.91  0.06

25.745   2400     B     21.83  0.10
25.776   1800     V     20.76  0.08
25.723   1800     R     20.13  0.05
25.799   1800     I     20.01  0.11

27.731   2100     B     21.62  0.12
27.731   1500     V     20.94  0.11
27.731   2400     R     20.24  0.05
27.731   1500     I     19.70  0.10

This message may be cited.