[vsnet-grb-info 7093] GRB 081118: Zadko observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8675
SUBJECT: GRB 081118: Zadko observations
DATE:    08/12/16 01:27:18 GMT
FROM:    David Coward at U of Western Aus.  <coward at physics.uwa.edu.au>

Subject: GRB 081118: Zadko observations
From: D.M Coward at UWA


D.M. Coward, T. Vaalsta, J. Zadko, A. Imerito, D. Blair, R. Burman,  
P. Lucas, S. Gordon, K. Frost, A. Fletcher
(University of Western Australia)
M. Todd, M. Zadnik (Curtin University)
M. Boer, A. Klotz (TAROT)


On 18 Nov, the Zadko Telescope team observed the XRT field of GRB  
081118 reported by P. Evans (GCN 8525) using the 1 meter Zadko  
Telescope (in very early commissioning mode). Imaging commenced  
approx 1.96 hr post burst trigger using an unfiltered integrating CCD  
video camera and continued over a period of 1 hr.
  The OA candidate reported by GCN 8529 is seen in a selected stack  
of 40 x 5 second exposures, though it is near the detection limit.
  We do not have absolute standard star photometric calibration.
Using nearby USNO-B1 stars we estimate the limiting magnitude of the  
OA to be in the range 20.9 +- 0.5.

This message is quotable in publications.

David Coward and Timo Vaalsta report on behalf of the UWA Zadko  
Telescope Team.