GCN Circular 2581
Subject
GRB040422: optical observations at Xinglong Observatory
Date
2004-04-25T17:55:22Z (20 years ago)
From
Yulei Qiu at Nat.Astro.Obs.of China <qiuyl@ns.bao.ac.cn>
Y.Qiu and J.Hu (NAOC) report:
We observed the erro box of GRB040422 with the 0.8 m telescope at Xinglong
Observatory, National Astronomical Observatories of China, at 18.24 UT April
22.
Four unfiltered images were taken with exposure time 300s. Comparing with
DSS-II image, we couldn't find any new source in the combined image.
The limiting magnitude of the combined image is about 20.0.
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