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GCN Circular 2565

Subject
GRB 040403: Optical Observations
Date
2004-04-06T17:37:20Z (21 years ago)
From
Vasilij Rumjantsev at CrAO <rum@crao.crimea.ua>
V.Rumyantsev (CrAO) and A.Pozanenko (IKI) report:

We have obtained 10 unfiltered images (300 s exposure each) of the GRB040403
error box (D.Gotz et al., GCN 2560). The images were taken with the AT-64
telescope  of Crimean Astrophysical observatory and cover the period  UT
17:48:54 - 18:37:24 of  April 3, 2004.

No afterglow candidate was  found in comparison with DSS2. We estimated the
limiting magnitudes of combined image (S/N=3) as following

Start time (UT)       telescope   exposure    limiting mag.
Apr. 03  17:48        AT-64     10x300 s      20.0

Combined image can be found at http://grb.rssi.ru/GRB040403/

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