GCN Circular 22637
Subject
GRB 180411A: Tautenburg observations
Date
2018-04-12T09:04:07Z (6 years ago)
From
Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>
B. Stecklum, S. Klose, and C. Hoegner (Thueringer Landessternwarte
Tautenburg) report:
We imaged the field of GRB 180411A (Liu et al., GCN 22630) in the Rc band
using the Tautenburg Schmidt telescope equipped with the prime focus CCD
camera. Observations started at 19:49 UT, about 7.5 hr after the burst.
Inside the XRT error circle (radius 3.5 arcsec; Gibson et al., GCN 22632)
we do not find any source. At a mean time of 19:53 UT we constrain the
magnitude of any optical transient to R>22 mag.