GCN Circular 3258
Subject
GRB 050408: Kuiper 1.5m observations
Date
2005-04-13T19:37:03Z (20 years ago)
From
Peter A. Milne at super-LOTIS <pmilne@as.arizona.edu>
P.A.Milne, G.G.Williams (Steward Obs), H.-S.Park (LLNL),
on behalf of the Super-LOTIS GRB team report:
We have observed the field of GRB 050408 over two nights
with the 1.5m Kuiper telescope on Mt. Bigelow, AZ., USA.
We have performed BVRI broad-band imaging and have detected
a source at a position consistent with that reported by
A. de Ugarte Postigo et al. (GCN 3193).
UT Mag Exp(sec)
9.16 R=21.888 +/- 0.150 11x120
9.18 I=21.305 +/- 0.203 9x120
9.20 V=22.069 +/- 0.171 11x120
9.26 R=21.963 +/- 0.129 8x300
9.29 I=20.691 +/- 0.132 8x300
9.32 V=22.618 +/- 0.191 7x300
9.35 B=22.369 +/- 0.166 6x300
10.26 I=22.288 +/- 0.390 4x300
10.29 V=23.480 +/- 0.612 4x300
The field was calibrated from Landolt fields observed during
the first night. Two field stars were compared against the
field calibration compiled by Nysewander et al. (GCN 3246).
We were brighter in all cases, by 0.20/0.02/0.16/0.14 magnitudes
for B/V/R/I respectively.
Further observations are planned to obtain images suitable for
use in image subtraction.