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GCN Circular 2436

Subject
Lulin optical follow-up observations of GRB031026
Date
2003-10-30T07:32:59Z (21 years ago)
From
Kuiyun Huang at IANCU <d919003@astro.ncu.edu.tw>
GCN Circular
Title: Lulin optical follow-up observations of GRB031026

A.C. Chen, H.C. Ting, H.C. Lin, K.Y. Huang, D. Kinoshita,W.H. Ip(NCU)
Y. Urata and T. Tamagawa (RIKEN) report:

"We have observed the entire region of HETE-2 error circle of
GRB031026 (N. Butler et al. GCN2429) with 1.0-m telescope Lulin
observatory (Institute of Astronomy, National Central University,
Taiwan) at 26.48-26.72 Oct 2003, corresponding 6-12 hours after the
burst.  We have imaged 9 fields by CCD camera (10'x10' field of view).
These average limiting magnitudes is about 20.9 (SN=3, compared with
USNO-A2.0 red magnitudes).  Comparing with Digitized Sky Survey (DSS2)
image, there are no new object down to the limiting magnitude."

The observation is summarized as follows:
 ---------------------------------------------------------------------
  Field  RA          DEC       Start    filter  Exp.(sec) Limit mag.
                              time(UT)
   1    03:17:55.5  +28:31:40 11:33       R      300 x 3   21.2
   2    03:17:56.8  +28:21:41 11:57       R      300 x 3   20.5
   3    03:17:58.1  +28:11:42 12:23       R      300 x 3   20.0
   4    03:19:27.2  +28:22:14 12:42       R      300 x 3   20.3
   5    03:19:26.0  +28:32:13 13:01       R      300 x 3   21.1
   6    03:19:28.4  +28:12:15 13:20       R      300 x 3   21.2
   7    03:18:42.0  +28:21:58 17:02       R      300 x 1   21.3
   8    03:18:40.8  +28:31:57 17:09       R      300 x 1   20.9
   9    03:18:43.2  +28:11:59 17:18       R      300 x 1   21.5
 ---------------------------------------------------------------------

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