GCN Circular 3252
Subject
GRB 050412 : XingLong optical observation
Date
2005-04-12T18:32:27Z (19 years ago)
From
Yuji Urata at RIKEN <urata@crab.riken.go.jp>
Y. Qiu, C.L Lu (BAO), Y.Q. Lou(THCA), K.Y. Huang, W.H. Ip(NCU),
Y. Urata (RIKEN) on EAFON report
" We have observed the XRT error region of GRB 050412 (Tamburelli et
al. GCN 3241) using 0.8-m telescope at XingLong Observatory,
China. Eight R-band images with each 300 exposure times are taken from
15.93 UT to 16.55 UT (~ 10.20 hrs to 10.82 hrs after the burst).
Coadding the eight images yields the 3-sigma limiting magnitude of
R~20, which was calibrated relative to USNO-B1.0 catalog. No new
source was detected in our images. There is no optical emission from
the optical candidate reported by Fox et al. (GCCN 3244) down to the
limiting magnitude."
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