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GCN Circular 2453

Subject

GRB 031111B (= H2925) : Kyoto Optical Observation

Date

2003-11-20T15:45:13Z (20 years ago)

From

Hitoshi Yamaoka at Kyushu U., VSNET-GRB collab. <yamaoka@rc.kyushu-u.ac.jp>

M. Uemura, R. Ishioka, T. Kato (Kyoto U.) and N. Nakashima, C.
Nakayama and H. Yamaoka (Kyushu U.) report on behalf of VSNET-GRB
collaboration:

  "We observed the position of GRB 031111B (= H2925) starting at
Nov. 12.45 UT (15 hours after burst) with the 0.25-m telescope
(+unfiltered CCD) at Kyoto University.  The stacked image (109 x 30s)
covers the central part (about 14%) of the entire error circle
(diameter 30').  Our field of view can be seen at: 
http://www.rc.kyushu-u.ac.jp/~yamaoka/GRB031111B/FOV.gif .
Visual comparison of the stacked image to the DSS 2 red image shows no
new object down to a limiting magnitude of about 17.2 (estimated with
USNO-A2.0 red magnitudes of many field stars).  

This message can be cited."