GCN Circular 3252
Subject
GRB 050412 : XingLong optical observation
Event
Date
2005-04-12T18:32:27Z (21 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."
This message may be cited.