[vsnet-grb-info 9638] GRB 100816A: TAROT Calern observatory optical detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  11106
SUBJECT: GRB 100816A: TAROT Calern observatory optical detection
DATE:    10/08/16 14:38:10 GMT
FROM:    Alain Klotz at CESR-CNRS  <Alain.Klotz at free.fr>

Klotz A. (CESR-OMP), Gendre B. (IASF),
Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report:

We imaged the field of GRB 100816A detected by SWIFT
(trigger 431764) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 1339s after the GRB trigger
The elevation of the field increased from
72 degrees above horizon and weather conditions
were good.

We co-added a series of 30s unfiltered exposures.
We detect the OT mentioned by Oates et al. 2010 (GCNC 11102)
very close to the limiting magnitude of the image :

start exp. = 1339s
end exp. = 1601s
R ~ 19.2

Magnitudes were estimated with the nearby
star NOMAD-1 1165-0624306 and are not corrected
for galactic dust extinction.