[vsnet-grb-info 567] GRB021113: optical observations at Bisei

[GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1700
SUBJECT: GRB021113: optical observations at Bisei
DATE:    02/11/20 12:29:37 GMT
FROM:    Yuji Urata at RIKEN  <urata@crab.riken.go.jp>

T. Kawabata, K. Ayani (BAO), H. Yamaoka (Kyushu Univ.), N. Kawai, and Y.
Urata (Titech / RIKEN), report:

"We performed R-band observations of GRB 021113 (Yoshida et al., GCN
1686) field with the Bisei Astronomical Observatory (BAO) 1.01-m
telescope starting at Nov. 13 11:13 UT (4.6 hrs after the burst). The
six-field mosaic images were obtained, which cover about 85% of refined
error box (Hurley et al., GCN 1692) during 11:13-12:39 UT.  From 14:05
UT, we imaged eight-field mosaic covering the entire error box. The
limiting magnitudes of the first six and later eight mosaic images based
on USNO-A2.0 red magnitudes were R ~ 17.6 and R ~ 18.1, respectively. No
new object was detected in comparison with DSS II red image." 

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