[AAVSO-HEN] GRB 090709: Faulkes Telescope North Upper Limits

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  9630
SUBJECT: GRB 090709: Faulkes Telescope North Upper Limits
DATE:    09/07/09 09:35:32 GMT
FROM:    Zach Cano at ARI/John Moores Liverpool  <zec at astro.livjm.ac.uk>

GRB 090709: Faulkes Telescope North Upper Limits

Z. Cano (Liverpool JMU), A. Melandri, C. Guidorzi (U. Ferrara), D. Bersier,
I.A. Steele, R.J. Smith, C. Mundell (Liverpool JMU)
report, on behalf of a large collaboration:

Following Swift detection of burst (Morris et al. GCN Circ. 9625), Faulkes
Telescope North (Hawaii) reacted robotically and began observing the field
of GRB 090709 in BVRi bands starting at 07:41:27 UT.

We detect no new source within the XRT error circle:

t_exp     t-T0(mid exposure)   	mag

30s    		207 s  		R2 > 19.3
180s  		457 s  		I  > 18.3

The upper limits are determined against stars in the USNO B1 catalog.