GCN Circular 29644
Subject
GRB 210306A: Tautenburg observations
Date
2021-03-10T14:33:10Z (3 years ago)
From
Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>
S. Klose, B. Stecklum, A. Nicuesa Guelbenzu, S. Melnikov, and S. Hoegner
(all Tautenburg) report:
We continued observations of the field of GRB 210306A (D'Elia et al., GCN
29597) with the Tautenburg 1.34m Schmidt telescope. For the optical
afterglow (Simpson & D'Elia, GCN 29636; Belkin et al., GCN 29635, and
references therein) we measure:
March 07, 00:21 UT : Rc = 20.47 +/- 0.13 (Vega mag)
March 07, 02:12 UT : Rc = 20.53 +/- 0.14
March 07, 19:34 UT : Rc > 21.2.
Data calibration followed Stecklum et al. (GCN 29604).