TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2840
SUBJECT: GRB 041211: Optical follow-up in East Asian region
DATE:    04/12/11 18:35:42 GMT
FROM:    Kuiyun Huang at IANCU  <d919003@astro.ncu.edu.tw>

GRB 041211: Optical follow-up in East Asian region

S. Nishiura(Tokyo Gakugei Univ.), D. Kinoshita (NCU), C.L. Lu (BAO)  
K. Y. Huang (NCU), Y. Urata (RIKEN), Y. Qiu (BAO), 
on behalf of the East Asian collaboration report:

" We have imaged the entire GRB 041211 error circle (Dezalay et al. GCN 2839) at 
Kiso (Japan), Lulin (Taiwan) and XingLong (China) observatory.

The observations are summarized as below:

Start time(UTC) Filter Exposure (sec)  Limit mag.   Site
                                        (SN=3)
Dec. 11.55        Rc     300 x 1          >~18      Kiso
Dec. 11.63        R      300 x 3          >~20      Lulin
Dec. 11.63        R      300 x 1          >~20    XingLong

Limiting magnitudes were estimated by comparison with several USNO-B1.0
stars.  Comparison with DSS II images, no new object was detected down
to the limiting magnitude."

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