GCN Circular 21023
Subject
GRB 170419A: Zadko observatory - Gingin optical observations
Date
2017-04-20T14:00:15Z (8 years ago)
From
Alain Klotz at IRAP-CNRS-OMP <Alain.Klotz@free.fr>
A. Klotz, D. Turpin (IRAP-CNRS-OMP), D. Macpherson (UWA/ICRAR), D.
Coward (UWA),
M. Boer, (UNS-CNRS-OCA), Gendre B. (UVI - Etelman Obs.),
A. Williams (PO-UWA), R. Martin (PO-UWA)
report:
We imaged the field of GRB 170419A detected by SWIFT
(trigger 748898) with the Zadko robotic telescope (D=100cm)
located at the observatory - Gingin, Australia.
The observations started 22.3h after the GRB trigger.
The elevation of the field decreased from
49 degrees above horizon and weather conditions
were good.
We co-added a series of exposures but we did not find any
optical transcient in the XRT error box provided by Goad et al.
(GCNC 21015):
t0+22.3h to t0+22.9h : Rlim = 21.0
Magnitudes were estimated with the nearby NOMAD1 stars
and are not corrected for galactic dust extinction.