GCN Circular 818

GRB000926 - Optical observations

The optical counterpart of GRB000926 has been observed using the
CFH12K CCD mosaic camera at the prime focus of the 3.6-m CFH
Telescope.

One 600s exposure with moderate seeing (image quality between 0.9"
and 1.0") has been obtained and a preliminary reduction using
the reference star of Halpern et al. (GCN #806
Not found
 
 
) with R=17.1 gives
the following measurement for GRB000926:

Sept. 29.3075  R = 21.23 +/- 0.05

Added to the R-band data points used in the analysis by Hjorth et al.
(GCN #814
Not found
 
 
), this new point confirms a pure power law decay with
a decay value of 1.69 +/- 0.03, which is not significantly different 
from Hjorth et al.'s determination.

An image of the area around the GRB can be found at
http://www.cfht.hawaii.edu/~veillet/grb.html

Kocevski, Donovan and G. Luppino are acknowledged for their help in 
this observation.

This message may be cited.


-- 
************************************************************
Dr. Christian Veillet,       CFHT Senior Resident Astronomer
Phone: (808) 885-3161   http://www.cfht.hawaii.edu/~veillet/
************************************************************