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TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 2097
SUBJECT: GRB030329: Optical observations
DATE: 03/04/05 01:39:57 GMT
FROM: Vasilij Rumjantsev at CrAO <rum@crao.crimea.ua>
E.Pavlenko, V.Rumyantsev, O.Antoniuk, N.Primak (CrAO) and A.Pozanenko (IKI)
report:
The OT found by Peterson and Price (GCN 1985) was imaged Cassegrain 38-cm
telescope of CrAO. Several 300 sec. exposures in R (Johnson) obtained
during Apr. 4. Based on filed photometry by A. Henden (GCN 2023) we
estimate the OT magnitude:
Mid time exposure R
(UT)
Apr 4.7686 4x300c 18.12 +/-0.11
4.8236 5x300Ó 18.32 +/-0.10
4.8412 5x300c 18.04 +/-0.07
After nearly flat period between end of 030402 and end of 030403 (GCN
2083,2084,2092) the OT definitely start a new fading phase. A power-law
index between Apr 3.8160 and Apr 4.8049 can be estimated as alpha ~1.7
A 10x180 sec. exposure image obtained on April 04.8012 can be found in
http://grb.rssi.ru/GRB030329/030329_030404_at64.gif
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