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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2218 SUBJECT: GRB030429, refiend optical brightness DATE: 03/05/08 11:40:46 GMT 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)
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