[vsnet-grb-info 20541] GRB 180411A: Tautenburg observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Apr 12 18:04:48 JST 2018
TITLE: GCN CIRCULAR
NUMBER: 22637
SUBJECT: GRB 180411A: Tautenburg observations
DATE: 18/04/12 09:04:07 GMT
FROM: Sylvio Klose at TLS Tautenburg <klose at 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.
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