{
  "bibcode": "2003GCN..2080....1S",
  "body": "R. Sato, Y. Yatsu, M. Suzuki, and N. Kawai (Tokyo Tech) report:\n\nWe have observed the afterglow (Peterson and Price GCN 1985, Torii GCN\n1986) of GRB030229 (H2652, Vanderspek et al. GCN 1997) on the nights\nof 2003 Apr 29, 30, and 31 at Tokyo Tech, Tokyo, Japan, using a 30 cm\nSC telescope with unfiltered AP 6E CCD camera.  The observationl\nstarted at 12:57 UT (80 min after the GRB trigger).\n\nWe have estimated the R magnitude using USNO 2.0 stars U1050_06349885\n(R=13.2), B:U1050_06348771 (R=14.2), and C:U1050_06351075 (R=14.0).\nThe results are shown in the table below.  The dip and rebrightening\nat t0+1.2d (Lipkin et al. GCN 2045) was detected in our data too.\n\n t-t0 (days)    R mag   err\n\n   0.0620      12.552  0.023\n   0.1484      13.370  0.029\n   0.1943      13.604  0.034\n   0.2373      13.799  0.043\n   0.2970      14.145  0.074\n   0.9457      15.987  0.127 \n   1.0151      16.167  0.081\n   1.0936      16.504  0.125\n   1.2172      16.316  0.140 \n   2.0050      17.087  0.212\n   2.1238      17.148  0.207\n\nThe images on the first night and our light curve can be found at\nhttp://www.hp.phys.titech.ac.jp/nkawai/030329/index_e.html.\n\nThis message may be cited.",
  "circularId": 2080,
  "createdOn": 1049371011000,
  "email": "nkawai@hp.phys.titech.ac.jp",
  "subject": "GRB030329: optical observations at Tokyo Tech",
  "submitter": "Nobuyuki Kawai at Tokyo Tech  <nkawai@hp.phys.titech.ac.jp>",
  "eventId": "GRB 030329"
}