GCN Circular 8174
Subject
GRB 080903: Liverpool Telescope observations
Date
2008-09-03T09:10:06Z (16 years ago)
From
Cristiano Guidorzi at INAF-OAB <cristiano.guidorzi@brera.inaf.it>
C. Guidorzi (INAF-OAB), R. J. Smith (LJMU), A. Gomboc (U. Ljubljana)
on behalf of a larger collaboration report:
On 2008 September 03 (03:32:18 UT) we began observing the field of
GRB 080903 (Grupe et al. GCN Circ. 8169) with the Liverpool Telescope
using the SDSS i filter.
We clearly detect the optical afterglow candidate reported by de
Ugarte Postigo et al. (GCN Circ. 8172) and Korotkiy et al.
(GCN Circ. 8173). We found the following magnitudes:
Telescope Filter T_mid[hr] Exposure[s] Mag
-------------------------------------------------------------
LT i' 2.59 6x300 21.32 +/- 0.07
LT i' 4.08 6x300 21.52 +/- 0.11
-------------------------------------------------------------
The calibration was performed using the I magnitude of the following
nearby USNOB1 catalogue star: 05:47:14.30, +51:15:32.8, using I=14.77.