GCN Circular 27177
Subject
GRB 200224A: Tautenburg observations
Date
2020-02-24T07:37:12Z (4 years ago)
From
Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>
B. Stecklum, S. Klose, A. Nicuesa Guelbenzu, and S. Melnikov (all
Tautenburg) report:
We observed the field of GRB 200224A (T0=03:24:49 UT; Ukwatta et al., GCN
27173) with the Tautenburg 1.34m Schmidt telescope equipped with the
TAUKAM 6k x 6k CCD camera and the wide V-band filter (VB). The
transmission curve of this filter closely follows the Gaia GBP filter.
Observations started at 04:09:53 UT and consisted of 5x3 min exposures.
Based on several Gaia DR2 stars in the field within 1 arcmin radius about
the afterglow position, we measure for the optical transient (Sota et al.,
GCN 27176) at RA, DEC (J2000) = 16:35:04.11, +41:36:42.4 (+/- 0.5 arcsec)
the following preliminary Vega magnitude:
mean time t = Feb 24, 04:18:01 UT; t-T0 = 53m 12s; VB = 21.83 +/- 0.10.
[GCN OPS NOTE(24feb20): This is the sixth Circular in the sequence of 8 circulars
which were all labeled A because of the sequence assigner being offline.
This circular was correctly labelled A.]