GCN Circular 1999
Subject
GRB 030329: OT B and R photometry, decline rate
Date
2003-03-29T21:12:43Z (21 years ago)
From
Avishay Gal-Yam at Tel Aviv U, Israel <avishay@wise1.tau.ac.il>
A. Gal-Yam, E. O. Ofek, D. Polishook and E.M. Leibowitz
(Wise observatory, TAU) report:
We are observing the OT of GRB 030329 (Peterson & Price, GCN 1985)
using the Wise observatory 1m telescope + SITe CCD camera, starting
March 29, 17:15 UT (5.6 hours after the burst). Large number
of 300 s B, 120 s V and 120 s R-band frames are being obtained under
highly variable conditions, with passing clouds.
We detect the OT on numerous B, V and R-band images. A rough calibration
using nearby bright USNO A-1 stars gives R~14.3 and B~15 for the OT. We
can also estimate the decline rate to be about 0.3 mag/hour in the R-band,
from the first two hours of data. Further data acquisition and analysis
are underway.