TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2784
SUBJECT: SUBJECT: GRB 041006 : Optical follow-up observation at TAROT 
DATE:    04/10/08 14:59:37 GMT
FROM:    Jean-Luc Atteia at Lab d Astrophys.,OMP,Toulouse  <atteia@ast.obs-mip.fr>

Klotz, A., Boer M., G. Stratta, and Atteia J-L. report:

TAROT observed the HETE alert #3570
on 2004 Oct. 06, 19:55 UT (middle time).
The telescope took a series of 12 x 100-s unfiltered images
of the afterglow reported by
G. Da Costa et al. (GCN 2765)

We co-added frames to obtain a single image.
Comparing to the USNO-1B catalog and DSS
image, we are able to detect all stars
brighter than R=19.4 but the afterglow
is not visible.

The candidate proposed by Da Costa et al. (GCN 2765)
is not detected at the 3 sigma level. We conclude that the
afterglow had a magnitude R > 19.4.

This message may be cited

[GCN OPS (08oct04): Due to a disk-full error, this Circular
was issued with the wrong serial number.  It has been changed 
from 2806 to 2784.]