GCN Circular 1995
Subject
GRB 030329: Optical Afterglow Observations
Date
2003-03-29T17:35:46Z (22 years ago)
From
Eli Rykoff at Univ. of Michigan/ROTSE <erykoff@umich.edu>
Rykoff, E. S. and Smith, D. A. on behalf of the ROTSE collaboration report:
We have observed the full error box of GRB 030329 (HETE trigger 2652),
using the ROTSE-3A 0.45 meter telescope at Siding Springs Observatory,
Australia, starting March 29, 13:05:19 UT (1.46 hours after the burst).
Due to partly cloudy skies, our first usable image was taken at
13:08:45 UT. We initiated a sequence of 90 one-minute exposures,
interrupted by a brief spell of light rain.
We identify the bright counterpart reported by Price (1985) and Torii
(GCN 1986), at the following coordinates:
RA: 10 44 50.0 Dec: 21:31:17.8
Some of our detections (unfiltered, calibrated to USNO A2.0 R-band) are:
UT (start) Mag (USNO R-band)
13:08:48 12.88 +/- 0.01
13:19:15 12.96 +/- 0.02
13:35:25 13.11 +/- 0.01
15:34:38 13.90 +/- 0.02
15:45:16 14.05 +/- 0.03
We continued to follow the transient until it dropped below our
elevation cut.
A preliminary ROTSE lightcurve can be found at:
http://www.rotse.net/transients/grb030329/grb030329_lc0.ps
Please note that our magnitude errors fluctuated as clouds drifted
through the field of view.