[vsnet-grb-info 8111] GRB 090709A: NOT optical observations
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Fri Jul 10 09:11:00 JST 2009
TITLE: GCN CIRCULAR
NUMBER: 9644
SUBJECT: GRB 090709A: NOT optical observations
DATE: 09/07/10 00:10:54 GMT
FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst <malesani at astro.ku.dk>
D. Malesani (DARK/NBI), J. Telting (NOT), P. Wilson (NOT and Univ.
Oslo), P. Jakobsson (Univ. Iceland), J.P.U. Fynbo, G. Leloudas
(DARK/NBI), A.J. Levan (Univ. Warwick), and K. Wiersema (Univ.
Leicester), report on behalf of a larger collaboration:
We observed the field of GRB 090709A (Morris et al., GCN 9625) with the
NOT equipped with ALFOSC. Observations were carried out in the R band,
starting on 2009 Jul 9.943 (14.97 hr after the trigger), for a total
exposure time of 30 min.
At the position of the NIR transient (Aoki et al., GCN 9634; Morgan et
al., GCN 9635) we do not detect any source, down to a limiting magnitude
R >~ 24. The calibration is based on a number of closeby USNO-B1 stars
(R2 magnitudes).
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