TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2118
SUBJECT: GRB030329: Near Infrared Observations at Gunma
DATE:    03/04/08 05:04:46 GMT
FROM:    Eiji Nishihara at GAO  <eiji@astron.pref.gunma.jp>

E. Nishihara, O. Hashimoto, K. Kinugasa (Gunma Astronomical Observatory)

J-, H-, and Ks-band photometry of the optical afterglow (Peterson and
Price GCN 1985, Torii GCN 1986) of GRB030329 (Vanderspek et al. GCN
1997) were obtained on the nights of 2003 Apr 29 and 30 at GAO, Gunma,
Japan, using the 1.5-m telescope and the IR Camera.  The observation
started at 13:50 UT (133 min after the GRB trigger).

Our preliminary J-band magnitudes (rough estimate of typical error is
0.1 mag) of the afterglow are given below:

                         ---------------------
                               UT          J
                         ---------------------
                         Apr 29 13.868   11.87
                                15.253   12.42
                                16.902   12.66
                                17.828   12.93
                         Apr 30 12.534   15.10
                                14.159   15.21
                         ---------------------

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