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GCN Circular 2743

Subject
GRB040924 : Optical candidate observations at Lulin observatory
Date
2004-09-25T10:04:48Z (20 years ago)
From
Kuiyun Huang at IANCU <d919003@astro.ncu.edu.tw>
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GRB040924 : Optical candidate observations at Lulin observatory

J.H. Hu, H.C. Lin (NCU)
K.Y. Huang, Y. Urata, W.H. Ip, T. Tamagawa=20
on behalf of Lulin GRB collaboration report:

 We have observed the optical candidate of GRB040924 reported by Fox
et al. (GCN 2734Loading...
 
 ) with 1-m telescope at Lulin Observatory ( National
Central University, Taiwan). We made B, V, R and I-band imaging
observations starting at 14.31 UT (2.3 hrs after the burst). =20
 Based on our preliminary analysis, the optical candidate was
detected. The position of the candidate referenced to the USNO-B1.0
are=20

 RA =3D 02:06:22.52, Dec =3D 16:06:48.5 (J2000)

 with uncertainties of approximately 0.2".=20

The R-band magnitude at 18.67 UT (6.7 hrs after the burst) is 21.4
mag. compared with near USNO-B1.0 stars as photometric references.

 Further analysis are in progress."

This message maybe cited.

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<BODY bgColor=3D#ffffff>GRB040924 : Optical candidate observations at =
Lulin=20
observatory<BR><BR>J.H. Hu, H.C. Lin (NCU)<BR>K.Y. Huang, Y. Urata, W.H. =
Ip, T.=20
Tamagawa <BR>on behalf of Lulin GRB collaboration =
report:<BR><BR>&nbsp;We have=20
observed the optical candidate of GRB040924 reported by Fox<BR>et al. =
(GCN 2734Loading...
 
 )=20
with 1-m telescope at Lulin Observatory ( National<BR>Central =
University,=20
Taiwan). We made B, V, R and I-band imaging<BR>observations starting at =
14.31 UT=20
(2.3 hrs after the burst).&nbsp; <BR>&nbsp;Based on our preliminary =
analysis,=20
the optical candidate was<BR>detected. The position of the candidate =
referenced=20
to the USNO-B1.0<BR>are <BR><BR>&nbsp;RA =3D 02:06:22.52, Dec =3D =
16:06:48.5=20
(J2000)<BR><BR>&nbsp;with uncertainties of approximately 0.2". =
<BR><BR>The=20
R-band magnitude at 18.67 UT (6.7 hrs after the burst) is 21.4<BR>mag. =
compared=20
with near USNO-B1.0 stars as photometric =
references.<BR><BR>&nbsp;Further=20
analysis are in progress."<BR><BR>This message maybe cited.
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