GCN Circular 8076
Subject
GRB 080805: Faulkes Telescope South optical observations
Event
Date
2008-08-06T20:03:48Z (18 years ago)
From
Cristiano Guidorzi at INAF-OAB <cristiano.guidorzi@brera.inaf.it>
C. Guidorzi (INAF-OAB), I. Steele and R.J. Smith (LJMU) on behalf of a
larger collaboration report:
On 2008 August 05 (10:12:35 UT) we began observing the field of GRB 080805
(Pagani et al. GCN Circ. 8059) with the Faulkes Telescope South using
the R and i' filters.
In our coadded i' frame we marginally detect the optical afterglow
(Kruehler et al. GCN Circ. 8060; de Ugarte Postigo et al. GCN Circ. 8061):
Telescope Filter T_mid[hr] Exposure[s] Mag
-----------------------------------------------------------
FTS i' 5.410 6x300 22.5 +/- 0.4
-----------------------------------------------------------
The calibration was performed using the I magnitudes of several
USNOB-1 catalogue field objects.
From the comparison with the value reported by GROND
(Kruehler et al. GCN Circ. 8060) we estimate an average
power-law decay index of ~0.7, consistent with that inferred
in the R band (de Ugarte Postigo et al. GCN Circ. 8061).