GCN Circular 2218
Subject
GRB030429, refiend optical brightness
Date
2003-05-08T11:40:46Z (22 years ago)
From
Vasilij Rumjantsev at CrAO <rum@crao.crimea.ua>
V.Rumyantsev (CrAO), V.Biryukov (SAI, MSU), A.Pozanenko (IKI) report:
We have performed PSF analysis of combined image of the OT found by A.
Gilmore (GCN 2184). The unfiltered image was obtained on Apr. 29 between
(UT) 18:19 and 20:57 (GCN 2190). Based on field photometry (R-band) by
A.Henden (GCN 2214) we estimate brightness of the OT:
Mid.Time exposure mag (Unfiltered)
(UT) sec
Apr.29.820 39x120 20.20 +/-0.15
This brightness estimation is consistent with OT decay slope ~ 1 reported by
J.Fynbo (GCN 2185).
(We gratefully acknowledge the notion of J.Fynbo regarding the slope decay
reported in our GCN 2190. Due to typo the slope decay was erroneously
calculated as 2)