GCN Circular 9225
Subject
GRB 090424: TNT optical observations
Event
Date
2009-04-24T15:21:45Z (17 years ago)
From
W.K. Zheng at NAOC <zwk@bao.ac.cn>
L.P. Xin, W.K. Zheng, Y.L. Qiu, J.Y. Wei,
j. Wang, J.S. Deng, Y. Urata and J.Y. Hu
on behalf of EAFON report:
TNT quickly responsed to the GRB 090424 (Swift trigger 350311;
Cannizzo et al. GCN 9223) in automatical mode, the first
images was taken start 14:13:36, 87s after the burst.
The optical afterglow (Cannizzo et al. GCN 9223; Yuan GCN 9224)
was clearly detected in our early white and R bands images,
after preliminary reduction, we estimated the afterglow have
faded about 3.5 mag from ~100s to ~1000s after the burst.
Observation is still under going.
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