TITLE:   GCN CIRCULAR
NUMBER:  9380
SUBJECT: GRB 090516 - Zadko Telescope observations
DATE:    09/05/17 02:14:33 GMT
FROM:    David Coward at U of Western Aus.  <coward@physics.uwa.edu.au>

SUBJECT: GRB 090516 - Zadko Telescope observations
FROM: D.M Coward at UWA


T.P. Vaalsta, Liang Yan, and J. Zadko report on
behalf of the Zadko Telescope Team.

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

The 1.0m F/4 Zadko telescope started imaging
the field of GRB 090516 (trigger=352190, D. Palmer
et al., GCN 9374) 275 minutes after the Swift
trigger. A fading source was found within the
XRT error circle (GCN 9376). The field was
observed for 131 minutes.

Preliminary photometry of unfiltered images
taken with an iKon DW436BV camera show the
following initial magnitudes of the optical
afterglow:


tmid(m) Exp. Time    Magnitude
-------------------------------------
275            5s    18.9  +/- 0.5
285           20s    19.5  +/- 0.3
296          200s    20.26 +/- 0.14


Dr David Coward
Senior Research Fellow
School of Physics
University of Western Australia
Crawley WA 6009

Tel: +61 8 6488 4563
Mobile 0423981240
Fax: +61 8 6488 1170